ESA to launch Gaia space observatory on November 20
Washington: European Space Agency`s billion-star surveyor Gaia, which will map the stars with unprecedented precision, is going to be launched from Europe`s spaceport in Kourou on November 20.
Gaia`s main aim is to create a highly accurate 3D map of Milky Way Galaxy by repeatedly observing a billion stars to determine their positions in space and their movement through it.
Other measurements will assess the vital physical properties of each star, including temperature, luminosity and composition.
Gaia will map the stars from an orbit around the Sun, near a location some 1.5 million km beyond Earth`s orbit known as the L2 Lagrangian point.
The probe is going to spin slowly, sweeping its two telescopes across the entire sky and focusing their light simultaneously onto a single digital camera, the largest ever flown in space - it has nearly a billion pixels.
Earlier this month the spacecraft`s sunshield passed the final deployment test in the cleanroom in Kourou and has now been stowed in its final configuration ready for the launch.
Shortly after launch, the sunshield will be deployed, forming a 10.5 m-wide `skirt` around Gaia`s base.
The shield has two purposes: to shade Gaia`s sensitive telescopes and cameras from sunlight, allowing them to cool to their operating temperature of -110 degree celsius, and to provide power to operate the spacecraft.
The Sun-facing side of the shield is partially covered with solar panels to generate electricity.
More from India
More from World
More from Sports
More from Entertaiment
- Watch: Jayalalithaa's last rites performed by her close friend and aide Sasikala Natarajan
- Jayalalithaa's funeral procession: Sea of mourners gather to pay last respects
- Panel discussion over continuous chaos in Parliament on demonetisation
- Watch: Jayalalithaa's last rites performed by her close friend and aide Sasikala Natarajan - Part II
- DNA: Know why Jayalalithaa was buried and not cremated
- RIP Amma: Jayalalithaa dies after 75 days in hospital; Tamil Nadu mourns
- Twitter users blast Arvind Kejriwal as he says 'Modi will never appoint a Muslim Vice President no matter what Jung does'
- RBI to issue new Rs 100 banknotes, old notes to continue as legal tender
- Airtel’s free 4G internet offer may be a ploy to steal your data
- Kapil Sharma renews contract, his latest fee will make your jaw drop!