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fun story for the day
by pravalika nanda Sat Mar 11, 2017 9:55 am
http://www.space.com/35999-lost-indian-moon-probe-found-radar.html
The researchers used the 230-foot (70 meters) antenna at NASA's Goldstone Deep Space Communications Complex in California to beam microwaves toward the moon in July 2016. They then studied the radar "echoes" that bounced back to Earth using the 330-foot (100 m) Green Bank Telescope in West Virginia. Some follow-up observations were also made by the 1,000-foot-wide (305 m) radar dish at Arecibo Observatory in Puerto Rico
These echoes picked out Chandrayaan-1, India's first moon probe, as well as NASA's Lunar Reconnaissance Orbiter (LRO). Finding LRO was less of a challenge and more of a proof of concept; it's an active spacecraft, so precise location data from the mission's navigators guided the search, detection team members said.
Despite the potential influence of mountains and other "mass concentrations," which can shift a probe's path, Chandrayaan-1 was more or less where team members expected it to be — in a polar orbit about 125 miles (200 kilometers) above the lunar surface.
Astronomers commonly use this "interplanetary radar" technique to detect and characterize asteroids. But employing it to find a lost probe in lunar nd-based radars could possibly play a part in future robotic and human missions to the moon, both for a collisional hazard assessment tool and as a safety mechanism for spacecraft that encounter navigation or communication issues," NASA officials wrote in the same statement.
The Chandrayaan-1 also included an impactor, which was released from the orbiter in November 2008. The impactor's violent arrival on the moon in November 2008 revealed evidence of water ice on the lunar surface.
India aims to launch its second moon mission, Chandrayaan-2, in early 2018. The mission will consist of an orbiter, lander and rover.
The researchers used the 230-foot (70 meters) antenna at NASA's Goldstone Deep Space Communications Complex in California to beam microwaves toward the moon in July 2016. They then studied the radar "echoes" that bounced back to Earth using the 330-foot (100 m) Green Bank Telescope in West Virginia. Some follow-up observations were also made by the 1,000-foot-wide (305 m) radar dish at Arecibo Observatory in Puerto Rico
These echoes picked out Chandrayaan-1, India's first moon probe, as well as NASA's Lunar Reconnaissance Orbiter (LRO). Finding LRO was less of a challenge and more of a proof of concept; it's an active spacecraft, so precise location data from the mission's navigators guided the search, detection team members said.
Despite the potential influence of mountains and other "mass concentrations," which can shift a probe's path, Chandrayaan-1 was more or less where team members expected it to be — in a polar orbit about 125 miles (200 kilometers) above the lunar surface.
Astronomers commonly use this "interplanetary radar" technique to detect and characterize asteroids. But employing it to find a lost probe in lunar nd-based radars could possibly play a part in future robotic and human missions to the moon, both for a collisional hazard assessment tool and as a safety mechanism for spacecraft that encounter navigation or communication issues," NASA officials wrote in the same statement.
The Chandrayaan-1 also included an impactor, which was released from the orbiter in November 2008. The impactor's violent arrival on the moon in November 2008 revealed evidence of water ice on the lunar surface.
India aims to launch its second moon mission, Chandrayaan-2, in early 2018. The mission will consist of an orbiter, lander and rover.
pravalika nanda- Posts : 2372
Join date : 2011-07-14
Re: fun story for the day
by pravalika nanda Sat Mar 11, 2017 7:59 pm
http://www.msn.com/en-us/video/wonder/nasa-finds-lost-lunar-spacecraft-using-new-radar-technique/vi-AAo74kx?ocid=spartanntp
pravalika nanda- Posts : 2372
Join date : 2011-07-14
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