Author Topic: LIVE: Chandrayaan-1 launch - First Indian mission to the Moon - October 22, 08  (Read 108738 times)

Offline marsavian

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Scientist rubbishes Apollo 15 conspiracy theory

A Camera on board India’s maiden unmanned lunar mission Chandrayaan-1 has recorded images of the landing site of US spacecraft Apollo 15, a scientist said today, rubbishing conspiracy theories that the fourth US mission to land on the moon four decades back was a hoax.

The Terrain mapper camera (TMC) on board Chandrayaan-1, which had an abrupt end a few days back, has sent the prints of landing site of Apollo 15 and tracks of the lunar rovers used by astronauts to travel on lunar surface, a senior scientist associated with India’s lunar mission said during a presentation here.

“The images captured by hyper spectral camera fitted as a part of Chandrayaan-1 image payload has reconfirmed the veracity of Apollo 15 mission,” said Dr. Prakash Chauhan, who is a senior scientist with Indian Space Research Organisation’s (ISRO) Hyderabad-based space application centre.

Chauhan was presenting the findings of Chandrayaan-1 mission in his paper ‘Chandrayaan-1: TMC and HYSI data analysis for Apollo landing sites and ‘Mare Orientale’, which would be unveiled in public domain two months later, after further analysis.

The Chandrayaan-1 images have disproved the theory of conspiracy which had claimed that the Apollo 15 was a hoax, he said.

“Chandrayaan-1 has managed to identify the landing site used by the Apollo 15 shuttle on the basis of the disturbances on the moon’s surface,” Chauhan said.

« Last Edit: 09/03/2009 03:46 AM by marsavian »

Offline Blackstar

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"Chandrayaan-I was 'killed' by heat stroke
Andrew Pereira, TNN 7 September 2009, 01:12am IST
PANAJI: The reasons for early termination of the Chandrayaan-I mission are now tumbling out and they reveal that ISRO had kept the Moon orbiter's problems tightly under wraps.

Contrary to the space agency's explanation that Chandrayaan's orbit around the Moon had been raised from 100km to 200km in May this year for a better view of the Moon's surface, it is now known that this was because of a miscalculation of the Moon's temperature that had led to faulty thermal protection.

Admitting this, Dr T K Alex, director, ISRO Satellite Centre, Bangalore, said, “We assumed that the temperature at 100km above the Moon's surface would be around 75 degrees Celsius. However, it was more than 75 degrees and problems started to surface. We had to raise the orbit to 200km.""

This isn't exactly a surprise to people involved in the program.  I've heard some griping that the Indians did not listen to some of their American counterparts who warned them about the thermal issue.  As a result, Chandrayaan-1 was not properly shielded.  Dunno if that is true.
« Last Edit: 09/07/2009 09:49 PM by Blackstar »

Offline seshagirib

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Too bad. Well, they accomplished quite a lot in this, their first mission to the moon, so my hat's off to them.

Some European scientists concur:

Online jacqmans

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RELEASE: 10-055


WASHINGTON -- Using data from a NASA radar that flew aboard India's
Chandrayaan-1 spacecraft, scientists have detected ice deposits near
the moon's north pole. NASA's Mini-SAR instrument, a lightweight,
synthetic aperture radar, found more than 40 small craters with water
ice. The craters range in size from 1 to 9 miles (2 to15 km) in
diameter. Although the total amount of ice depends on its thickness
in each crater, it's estimated there could be at least 1.3 million
pounds (600 million metric tons) of water ice.

"The emerging picture from the multiple measurements and resulting
data of the instruments on lunar missions indicates that water
creation, migration, deposition and retention are occurring on the
moon," said Paul Spudis, principal investigator of the Mini-SAR
experiment at the Lunar and Planetary Institute in Houston. "The new
discoveries show the moon is an even more interesting and attractive
scientific, exploration and operational destination than people had
previously thought."

During the past year, the Mini-SAR mapped the moon's
permanently-shadowed polar craters that aren't visible from Earth.
The radar uses the polarization properties of reflected radio waves
to characterize surface properties. Results from the mapping showed
deposits having radar characteristics similar to ice.

"After analyzing the data, our science team determined a strong
indication of water ice, a finding which will give future missions a
new target to further explore and exploit," said Jason Crusan,
program executive for the Mini-RF Program for NASA's Space Operations
Mission Directorate in Washington.

The Mini-SAR's findings are being published in the journal Geophysical
Research Letters. The results are consistent with recent findings of
other NASA instruments and add to the growing scientific
understanding of the multiple forms of water found on the moon. The
agency's Moon Mineralogy Mapper discovered water molecules in the
moon's polar regions, while water vapor was detected by NASA's Lunar
Crater Observation and Sensing Satellite, or LCROSS.

Mini-SAR and Moon Mineralogy Mapper are two of 11 instruments on the
Indian Space Research Organization's Chandrayaan-1. The Applied
Physics Laboratory in Laurel, Md., performed the final integration
and testing on Mini-SAR. It was developed and built by the Naval Air
Warfare Center in China Lake, Calif., and several other commercial
and government contributors.

For more information about NASA's Mini-SAR, also known as Mini-RF,

For more information about the Moon Mineralogy Mapper, visit:

For more information about LCROSS, visit:

For more information about Chandrayaan-1, visit:

Offline seshagirib

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Another Chandrayan discovery!

"Magnetic Refuge Found on Moon"

Offline Space Pete

NASASpaceflight ISS Editor

Offline seshagirib

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Cave in moon:Base station for astronauts?

New Delhi: Scientists at the Indian Space Research Organization have discovered a giant underground chamber on the moon, which they feel could be used as a base by astronauts on future manned missions to moon.

An analysis by an instrument on Chandrayaan-1 revealed a 1.7-km long and 120-metre wide cave near the moon's equator that is in the Oceanus Procellarum area of the moon that could be a suitable 'base station' for future human missions.

Offline pradeep

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Some of the Chandrayaan-I images have been posted online at I guess they're waiting for the data policy to change in 2011 before releasing the image in full resolution, which is expected some time soon.


Offline Ohsin

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Hello old friend. Missed ya!  :-*

“We have been able to detect NASA’s Lunar Reconnaissance Orbiter [LRO] and the Indian Space Research Organization’s Chandrayaan-1 spacecraft in lunar orbit with ground-based radar,” said Marina Brozović, a radar scientist at JPL and principal investigator for the test project. “Finding LRO was relatively easy, as we were working with the mission’s navigators and had precise orbit data where it was located. Finding India’s Chandrayaan-1 required a bit more detective work because the last contact with the spacecraft was in August of 2009.”

Edit: May be I should've started a new thread
« Last Edit: 03/09/2017 06:28 PM by Ohsin »
"Well, three cheers to Sharma, but our real baby is INSAT."

Offline Star One

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Scientists spy new evidence of water in the Moon's interior

The research, which Milliken co-authored with Shuai Li, a postdoctoral researcher at the University of Hawaii and a recent Brown Ph.D. graduate, is published in Nature Geoscience.

Detecting the water content of lunar volcanic deposits using orbital instruments is no easy task. Scientists use orbital spectrometers to measure the light that bounces off a planetary surface. By looking at which wavelengths of light are absorbed or reflected by the surface, scientists can get an idea of which minerals and other compounds are present.

The problem is that the lunar surface heats up over the course of a day, especially at the latitudes where these pyroclastic deposits are located. That means that in addition to the light reflected from the surface, the spectrometer also ends up measuring heat.

"That thermally emitted radiation happens at the same wavelengths that we need to use to look for water," Milliken said. "So in order to say with any confidence that water is present, we first need to account for and remove the thermally emitted component."

To do that, Li and Milliken used laboratory-based measurements of samples returned from the Apollo missions, combined with a detailed temperature profile of the areas of interest on the Moon's surface. Using the new thermal correction, the researchers looked at data from the Moon Mineralogy Mapper, an imaging spectrometer that flew aboard India's Chandrayaan-1 lunar orbiter.

The researchers found evidence of water in nearly all of the large pyroclastic deposits that had been previously mapped across the Moon's surface, including deposits near the Apollo 15 and 17 landing sites where the water-bearing glass bead samples were collected.