Showing posts with label anniversary. Show all posts
Showing posts with label anniversary. Show all posts

Remembering Carl Sagan



Today we mark the thirteenth year death anniversary of a great personality, an astronomer, author and a science popularizer – Carl Sagan (November 9, 1934 – December 20, 1996).

The COSMOS series still manage to make me inspire in lot of ways and I consider it as the best series ever made.

10 Years After: Carl Sagan And Ann Druyan Reflect - Best Of Carl Sagan's Cosmos





I came across this interesting song "A Glorious Dawn" made from the series "Cosmos," which also includes Stephen Hawking "singing."



His teaching, his legacy will continue to inspire many science educators in generations to come.

"We are a way for the cosmos to know itself. " - Carl Sagan




Links to other posts I made over the years.
Star stuff contemplating star stuff : Remembering Carl Sagan

The Star Stuff Guy- Carl Sagan


Other links:
Carl Sagan Portal

Celebrating Sagan

The Discovery Enterprise: The Best of Cosmos - Remembering Carl Sagan

The Discovery Enterprise: One of Carl Sagan's Most Pertinent Messages for Humanity

92nd birth anniversary of Sir Arthur Clarke

Dear Friends, Earthlings and ET’s (as Arthur would often say),

We have almost traveled two orbits around the Sun without the presence of Sir Arthur Clarke. Today, 16th of December 2009 mark his 92nd birth anniversary.

After completing 90 orbits around the Sun, Sir Arthur rests in peace; perhaps now enjoying wandering in space or spending time with the dinosaurs he used to dream of. His passing was a great loss to all of us around the world. Although his personal odyssey here on Earth is over, his unparalleled vision of the future will lives on through his writing; and will inspire many generations to come.



Royal College Astronomical Society pays respect to ACC

I was able to go to the cemetery today with few students from Royal College Astronomical Society who wanted to pay respect to Sir Arthur.
The first thing you noticed is the wording on the tombstone which says, “Here rests Sir Arthur Charles Clarke, he never grew up, but he never stopped growing”. These words were written by Sir Arthur himself.






I find below image very moving, I took it last year in one of my visits to Sir Arthur’s office in Barnes Place, Colombo, Sri Lanka. I remember he used to wear this jacket sometimes, and seeing it hanging it at his room reminds how dearly we miss him.


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Links to other ACC related posts I made over the years.

Sir Arthur C Clarke’s 90th birth day blog

90th birthday reflections video

Sir Arthur’s birthday celebration

Sir Arthur Clarke: Completes 90 orbits around the Sun!!!

Last EGOGRAM

Sir Arthur C Clarke dies at 90...

Funeral fixed for Saturday, March 22, 2008

"ACC - 9 decades"

Some pics from the funeral...

An Interview with Sir Arthur C. Clarke by Dr. Kavan Ratnatunga – 30th August 2000

IOR and AOG



Other links:
List of ACC posts at Universe Cafe

ACC page at Sri Lanka Astronomical Association

Sir Arthur Clarke’s 90th birthday blog



Image credit - Shahidul Alam (ACC potrait photo), Thilina Heenatigala

Moon Rocks from the Apollo 11 Mission

It’s been 40 years since the historical event that change the whole view of the mankind. Scientists says that there are still many answers to be gleaned from the moon rocks collected by the Apollo 11 astronauts on their historic moonwalk 40 years ago July 20.

Apollo 11 carried the first geologic samples from the Moon back to Earth. In all, astronauts collected 22 kilograms of material, including 50 rocks, samples of the fine-grained lunar "soil," and two core tubes that included material from up to 13 centimeters below the Moon's surface. These samples contain no water and provide no evidence for living organisms at any time in the Moon's history. Two main types of rocks, basalts and breccias, were found at the Apollo 11 landing site.

The Apollo 11 samples and samples from almost every Apollo mission until the last one in December 1972 have been securely housed on the 4th floor of the physics department's Compton Laboratory. Today, the remaining lunar samples in Compton Hall that arrived in 1969 from the Apollo 11 mission and from subsequent Apollo missions in the 1970s are being painstakingly prepared for a return trip to Houston to NASA's moon rocks repository, the Lunar Sample Building at the Lyndon B. Johnson Space Center in Houston, Texas.

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Distribution of the lunar sample displays

In November 1969, then-U.S. President Richard Nixon requested that NASA create approximately 250 displays containing lunar surface material and the flags of 135 nations, U.S. possessions and states.

Each presentation included 0.05 grams of Apollo 11 moon dust, in the form of four small pieces encased in an acrylic button, as well as the flag of the recipient nation or state, also flown on the first manned lunar landing mission.

The displays that were presented to foreign heads of state included the inscription:
Presented to the People of ____________ by Richard Nixon, President of the United States of America.

This Flag of Your Nation was carried to the Moon and Back by Apollo 11 and This Fragment of the Moon's Surface was brought to Earth by the Crew of That First Manned Lunar Landing.

Once gifted, each of the lunar sample displays became the property of the recipient entity and therefore was no longer subject to being tracked by NASA. All other lunar samples' locations are well documented by the U.S. space agency to this day (with exception to similarly gifted Apollo 17 goodwill moon rocks).

As property of the nation or state, the Apollo 11 lunar samples are now subject to the laws for public gifts as set by that country. In most cases, as in the United States, public gifts cannot be legally transferred to individual ownership without the passage of additional legislation.


Astronauts Neil Armstrong and Edwin Aldrin setting their feet on the moon on July 21, 1969 is a historical achievement. They brought 25 kg of moonstones collected from there recording as a first consignment which brought from a sub planet to the Earth by man are considered to be the most precious scientific specimens of all the time. Portions of the sample have been distributed to 106 “principle investigators” in the United States and 36 in eight other countries. The investigators, all eminent in their specialties included Sri Lankan – late Dr. Cyril Ponnamperuma were selected for this work.

Preliminary examination team at the spacecraft center at Houston was first to scrutinize the samples. Preliminary examination team member’s performed time critical tests considered necessary before prolonged absence from the moon and exposure to Earth’s atmosphere might cause changes in the samples. They also exposed 30 species of animals and plants to lunar samples to test whether “moon germs” caused disease.

A surprising discovery emerged from test for determining approximate age of the moon rocks are about 4billion years.

A part of these stones were gifted to Sri Lanka by former US President Richard Nixon in 1973 and at present kept in the Geological Unit of the National Museums Department.


Sri Lanka National Museum



Display of Moon Rocks


The National Museum of Natural History was established on September 23, 1986, now completes 23 years. A special exhibition titled "Moonstones and mineral resources in Sri Lanka” was held to coincide with the 23rd anniversary.

A poster of the exhibition


The exhibition hall

At this exhibition these moonstones and related important photographs were on display. Exhibiting of Sri Lanka Ministerial Resources is the other part of this exhibition. The schoolchildren and the public got a wide understanding about our resources through those gems, graphite, mineral sands, mica, silica, sand sulphur, clay and limestones found in Sri Lanka.

This exhibition held through 23.09.2009 to 07.10.2009 many schools students and public came to witness the historical moonstones.

Sri Lanka Astronomical Association hopes to collaborate with the National Museum of Natural History to hold more public viewing exhibition of the Moonstones.

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Thilina Heenatigala
General Secretary
Sri Lanka Astronomical Association

w: http://thilinaheenatigala.blogspot.com
e: thilina.heenatigala(AT)yahoo.com


Thanks to Mr. Wajith Abeysinghe – curator at National Museum of Natural History.
Data Sources: NASA archives, National Museum of Natural History, collectSPACE

All photographs are copyrighted by Thilina Heenatigala.



Images:

The four pieces of historical moonstones from the Apollo 11 mission


Apollo 11 lunar sample display


Wording at the bottom of the display


Another view of the display


A poster with the information related to Moonstones


Set of photographs – memories from Apollo 11


Other exhibits


Another set of photographs


Entrance of The National Museum of Natural History

Remembering Sputnik 1: 52nd anniversary

We have come so far as 52 years after the launch of – Sputnik I. It’s the world’s first artificial satellite, about the size of a beach ball (58cm or 22.8inches in diameter), weighed only 83.6 kg. or 183.9 pounds, and took about 98 minutes to orbit the Earth on its elliptical path. This single launch managed to put the stepping stone to many new political, military, technology and scientific developments to come. This was the Dawn of Space Age!

Some memorable images...

A replica of Sputnik.


This metal arming key is the last remaining piece of the first Sputnik satellite. It prevented contact between the batteries and the transmitter prior to launch. Currently on display at the National Air and Space Museum.



The State Commission for the Sputnik satellite shown in 1957


Sputnik 1 Assembly
Announcement of intention to launch an earth satellite during the IGY by the Soviets.


Sputnik 1 in much more detail. The name comes from a Russian word for "traveling companion of the world."


Launch of Sputnik 1


Soviet 40 copecks stamp, showing satellite's orbit.



Images courtesy: NASA


One small step changed the human perspective


"I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the Earth,” were the words of President John F. Kennedy in 1961, as he announced the dramatic and ambitious goal of putting a man on the moon by the end of the decade.

Few years from that announcement, on 16 July 1969, half a million people gathered near Cape Canaveral, Florida. Their attention was focused on three astronauts—Neil A. Armstrong, Edwin E. Aldrin Jr., and Michael Collins—who lay in the couches of an Apollo spacecraft bolted atop a Saturn V launch vehicle, awaiting ignition of five clustered rocket engines to boost them toward the first lunar landing.

On July 20, 1969, the human race accomplished its single greatest technological achievement of all time when a human first set foot on another celestial body.

Six hours after landing at 4:17 p.m. Eastern Daylight Time (with less than 30 seconds of fuel remaining), Neil A. Armstrong took the “Small Step” into our greater future when he stepped off the Lunar Module, named “Eagle,” onto the surface of the Moon, from which he could look up and see Earth in the heavens as no one had done before him.

He was shortly joined by “Buzz” Aldrin, and the two astronauts spent 21 hours on the lunar surface and returned 46 pounds of lunar rocks. After their historic walks on the Moon, they successfully docked with the Command Module “Columbia,” in which Michael Collins was patiently orbiting the cold but no longer lifeless Moon.

The landing on the Moon is unquestionably the greatest technological achievement of the twentieth and possibly any other century.
Lunar Plaque


After more than 2½ hours on the lunar surface, the Apollo 11 crew left behind scientific instruments and a plaque (mounted on the LM Descent Stage ladder) bearing two drawings of Earth (of the Western and Eastern Hemispheres), an inscription, and signatures of the astronauts and Richard Nixon. The inscription read Here Men From The Planet Earth First Set Foot Upon the Moon, July 1969 A.D. We Came in Peace For All Mankind. They also left behind a memorial bag containing a gold replica of an olive branch as a traditional symbol of peace and a silicon message disk.
Other plaques from Apollo missions.

Apollo 11 Goodwill Messages




The Apollo 11 Goodwill Messages are statements from leaders of 73 countries around the world on a disc about the size of a 50-cent piece made of silicon that was left on the Moon by the Apollo 11 astronauts.
Even though Sri Lanka was invited to submit a Goodwill message, recently I learned that we did not!
Read more on this at “No Moon, please – we’re Ceylonese: How Sri Lanka lost the Moon…


Apollo Landing Sites Imaged by Lunar Reconnaissance Orbiter

The picture above shows the the Lunar Module, the part that stayed behind on the Moon when Armstrong and Aldrin blasted back up off the surface. It was essentially dead weight, so the LM was designed to split in half, with the top half (the aptly-named Ascent Module) going back up into orbit to meet with Michael Collins in the Command Module. From there they returned to Earth.

The Descent Module is about 4 meters or so across, and the image, above taken when the Sun was low on the horizon, clearly shows the DM and its shadow cast across the lunar surface. The region where they landed was fairly smooth, so the module is the only thing large enough in the image to cast an appreciable shadow.


LRC took images of the other Apollo sites as well.
All images credit: NASA/Goddard Space Flight Center/Arizona State University

Remembering the STS-107 astronauts of Space Shuttle Columbia who died tragically 6 years ago today!


Today, we honor the brace heroes of STS-107 who died aboard the Space Shuttle Columbia on this date in 2003.

The day started on a bright note for the crew of STS-107 aboard the Space Shuttle Columbia. They were awakened by a rousing rendition of Scotland the Brave in honor of mission specialist Laurel Clark’s Scottish heritage. Mission Control followed the wake-up tune with news the astronauts had been waiting for. It was time to come home. The seven members of the crew (commander Rick Husband, pilot Willie McCool and mission specialists Kalpana Chawla, Laurel Clark, Mike Anderson, David Brown and Israeli payload specialist Ilan Ramon) were coming to the end of a 16 day mission of scientific experimentation.

Shortly after 9:00AM EST, the Space Shuttle Columbia disintegrated in the skies above Texas, killing all crew members aboard.



More...

The Space Shuttle Columbia disaster occurred on February 1, 2003, when the Space Shuttle Columbia disintegrated over Texas during re-entry into the Earth's atmosphere, with the loss of all seven crew members, shortly before it was scheduled to conclude its 28th mission, STS-107.

The loss of Columbia was a result of damage sustained during launch when a piece of foam insulation the size of a small briefcase broke off the Space Shuttle external tank (the main propellant tank) under the aerodynamic forces of launch. The debris struck the leading edge of the left wing, damaging the Shuttle's thermal protection system (TPS), which protects it from heat generated with the atmosphere during re-entry. While Columbia was still in orbit, some engineers suspected damage, but NASA managers limited the investigation on the grounds that little could be done even if problems were found.

NASA's Shuttle safety regulations stated that external tank foam shedding and subsequent debris strikes upon the Shuttle itself were safety issues that needed to be resolved before a launch was cleared, but launches were often given the go-ahead as engineers studied the foam shedding problem without a successful resolution. The majority of Shuttle launches recorded such foam strikes and thermal tile scarring in violation of safety regulations.During re-entry of STS-107, the damaged area allowed the hot gases to penetrate and destroy the internal wing structure, rapidly causing the in-flight breakup of the vehicle. A massive ground search in parts of Texas, Louisiana and Arkansas recovered crew remains and many vehicle fragments.

Mission STS-107 was the 113th Space Shuttle launch. It was delayed 18 times over the two years from its original launch date of January 11, 2001 to its actual launch date of January 16, 2003. (It was preceded by STS-113.) A launch delay due to cracks in the shuttle's propellant distribution system occurred one month before a July 19, 2002 launch date. The Columbia Accident Investigation Board (CAIB) determined that this delay had nothing to do with the catastrophic failure six months later.

The Columbia Accident Investigation Board's recommendations addressed both technical and organizational issues. Space Shuttle flight operations were delayed for two years by the disaster, similar to the Challenger disaster. Construction of the International Space Station was put on hold, and for 29 months the station relied entirely on the Russian Federal Space Agency for resupply and crew rotation until Shuttle flights resumed with STS-114.





Source:
content-wiki, space.com
title-YOHAN FERREIRA

Happy Birthday: Space station celebrates 10 years




CAPE CANAVERAL, Fla. – NASA couldn't have staged it any better: 10 people in orbit for Thursday's 10th anniversary of the world's most elaborate and expensive housing project, the international space station.

On Nov. 20, 1998, the first part of the space station was launched by the Russians from Kazakhstan. NASA followed up two weeks later with piece No. 2 carried up by a space shuttle. Astronauts and cosmonauts moved in two years later, and the rest, as they say, is history.

The space station has grown into a behemoth outpost 220 miles up, home to three people at any given time — soon to be six.

Thanks to the newly arrived shuttle Endeavour, the space station now has five sleep stations, two baths, two kitchens and two mini-gyms. All told, there are nine rooms, three of them full-scale labs.

Three-quarters complete, the total mass is 627,000 pounds. NASA says it's about the size of a five-bedroom house.

Some other fascinating factoids: The space station has traveled 1.3 billion miles, orbited Earth more than 57,300 times, hosted 167 people from 15 countries, and served up more than 19,000 meals.

The space station has taken longer for NASA and its international partners to build, cost more money and produced less science than originally envisioned. But that hasn't spoiled the celebrations going on all over the world — and off.

For the record, the linked Endeavour and space station sailed past the 10-year mark at 1:40 a.m. EST Thursday while the astronauts slept. Mission Control marked the occasion by showing video of the first rocket's launch in 1998.

"After 10 years, we wish the international space station a happy birthday and we hope to see many, many more," Endeavour commander Christopher Ferguson said in a taped message from the orbiting complex.

Later Thursday, flight controllers around the world exchanged wishes of "Happy Birthday!" and "Happy Anniversary!" with the station's skipper, Mike Fincke.

Before rocketing away aboard Endeavour last Friday, astronaut Donald Pettit noted that every major engineering marvel has had its share of dragged-out schedules, budget overruns, controversy, even scandal.

"How long did it take us to build the Panama Canal, Brooklyn Bridge?" Pettit said.

As for the space station, "We're 10 years down the road, and it still isn't built. It's almost built. And it's an amazing, wonderful piece of technology that once it's done, people probably won't even think too much about how long it took to build," said Pettit, who called the complex home for five months in 2002-2003.

To date, it's taken 80 rocket launchings from Florida, Kazakhstan and French Guyana (the launching site for the European Space Agency's cargo carrier) to make and staff the space station.

The price tag, from start to finish, is often quoted at $100 billion. That includes money spent not only by the United States and Russia, but also Canada, Japan and the 18-nation European Space Agency. NASA disputes that amount and estimates its share at $44 billion, including shuttle launch costs.

As for delays, the 2003 Columbia disaster set space station construction back by a few years. So did Russian financial problems in the 1990s that significantly delayed the launch of the first crew's living quarters.

Its objective also has shifted over the years. NASA views the space station as essentially a place to learn more about astronaut health and other issues that could make or break future expeditions to the moon, Mars and beyond. Before, the emphasis was supposed to be on basic scientific experiments, like protein crystals and cell tissue.

Managers like to point out that the technical problems that have cropped up in orbit over the years — a torn solar wing and jammed solar wing-rotating joint to name a few — are lessons learned for deep-space travel.

The Russians, meanwhile, have used the space station as a cash cow, selling rocket rides to the occasional millionaire tourist to help keep their program going.

NASA expects to wrap up space station construction in 2010 when the three remaining space shuttles are retired. Astronauts then will have to hitch rides on Russian spacecraft until NASA's new rocketship is available to crews, most likely in 2015. That gap is an unavoidable thorn in NASA's side; it's possible the projected five-year hiatus in human launchings from U.S. soil could be whittled a little.

NASA Administrator Michael Griffin, who expects to be replaced in the Obama administration, has said repeatedly that the space agency does not have the money to keep flying the shuttles beyond 2010 if it wants to keep its new rocketship and moon exploration plans on track.

"The moon is not the end goal, just like the space station is not the end goal," Griffin noted. "The moon is a stepping stone on the way out."

Source: yahoo science news

“star stuff contemplating star stuff” : Remembering Carl Sagan


“Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people,” Carl Edward Sagan once said.

Even though I have been involved in astronomy for a while, but not until few years ago I discovered the “true Sagan”. Then thanks to Prof. Kavan Ratnatunga, last year I got an opportunity to watch all the episodes of COSMOS. Aired in more than 60 countries and viewed by 600 million people worldwide, this amazing series still is very effective though it was made in 80s.

What most inspired me about him was his ability to put something complicated in a very simplest form, so that anyone without a scientific background could understand it.


COSMOS and Sri Lanka

After seeing the series, Prof. Kavan and I decided to screen it at a local university for the undergraduate students. Each episode was followed by a discussion related to the theme.

Unfortunately the name Carl Sagan is not popular in Sri Lanka. Only handful of people is aware of this great mind. Since we, at Sri Lanka Astronomical Association planning programs for the International Year of Astronomy 2009 , under IYA2009 one of our goals would be to air COSMOS in our national channel with Sinhalese subtitles.

I hope during next year we’ll be able to get the necessary steps towards airing of COSMOS in Sri Lanka.

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Check Joel’s Carl Sagan Memorial Blog-a-Thon, Celebrating Sagan blog and website.

"The significance of a finding that there are other beings who share this universe with us would be absolutely phenomenal, it would be an epochal event in human history."

Sir Arthur’s birthday celebration

The special day was last Sunday. In the morning there was a small celebration at Sir Arthur’s place which was attended by his closest friends and family.
Sir Arthur happly cut the cake while everyone else sang "happy birthday"...




In the evening, a government hosted celebration took place with the presence of President of Sri Lanka – Mr. Mahinda Rajapakse, Russian Cosmonaut – Alexi Leonov, NASA scientist – Dr. Michael Zolenesky, NASA-JPL sicnetist – Dr. Sarath Gunapala, Prof.U. R. Rao – Indian Space Research Organization, Dr. Sajid Mirza of Pakistan Space & Upper Atmosphere Research Commission (SUPARCO), Prof. K. K. Y. W. Perera – Chairman of Arthur C Clarke Institute for Modern Technology-Sri Lanka and many other distinguished guests.




Sir Arthur cutting his cake...

With Russian cosmonaut - Alexi Leonov





With the President of Sri Lanka- Mahinda Rajapakse and Foreign Minister Rohitha Bogollaga .