Gaia Spreads Its Wings | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

Airborne Unlimited-
Monday

Airborne-Unmanned w/AUVSI-
Tuesday

Airborne Unlimited-
Wednesday

AMA Drone Report-
Thursday

Airborne Unlimited-
Friday

Airborne On ANN

Airborne 04.16.18

Airborne-UnManned 04.17.18

Airborne 04.18.18

AMA Drone Report 04.19.18

Airborne 04.20.18

Airborne-YouTube

Airborne 04.16.18

Airborne-UnManned 04.17.18

Airborne 04.18.18

AMA Drone Report 04.19.18

Airborne 04.20.18

Mon, Dec 12, 2011

Gaia Spreads Its Wings

European Probe's Sun Shield Deployed For The First Time

ESA's Gaia star-mapper has passed a critical test ahead of its launch in 2013: the spacecraft's sunshield has been deployed for the first time. Gaia's sunshield is an essential component of the mission. It keeps Gaia in shadow, maintaining the scientific instruments at a constant temperature of around -110 degrees centigrade.

ESA Photo

The sunshield is about 10 m across, which is too large for the launch vehicle fairing, so it has been built with a dozen folding panels that will be deployed after launch. Since the sunshield is designed for the weightlessness of space, it cannot support its own weight on Earth. So, during this test at Astrium in Toulouse, France, support cables and counterweights simulated weightless conditions and provided a realistic trial.

During its expected lifetime of five years, Gaia will take a census of a billion stars - roughly 1% of all of the stars in our Galaxy. It will observe each star about 70 times, each time recording its brightness, colour and, most importantly, its position. By comparing Gaia's series of exquisite observations, astronomers will precisely measure the apparent movement of each star across the heavens, enabling them to determine its distance and true motion through space. The unprecedented results will allow astronomers to trace the history of the Milky Way.

Before the 2013 launch, some of the solar array panels needed to generate power will be fixed to the sunshield. The rest will be placed on the bottom of the spacecraft.

FMI: www.esa.int

Advertisement

More News

Airborne-Unmanned 04.17.18: XPO 2018, Drone Broadcasts, Airbus Inspection Drone

Also: NZ AFB Drone Incident, Police UAVs, Inaugural Drone Boot Camp, Predator 5M Flight Hours This is it! THE major unmanned exposition of the year -- AUVSI XPONENTIAL 2018 starts >[...]

Airborne 04.20.18: Continental Jet-A Seminole, SWA Fallout, NYC NIMBY's Helo's

Also: Teamsters Talk Allegiant, Coleman Young Airport, Miracle Flights, IN Av Repair Biz Cleared Piper has selected the Continental Motors CD-170 compression ignition engine fueled>[...]

AMA Drone Report 04.19.18: AMA Leadership, FAA Reauthorization, Coachella

Also: New French Regs, Drone Boot Camp, Public Safety Drone Standards, DroneShield Protects NASCAR It’s a little bit sad and yet a bit cool to see AMA make an exciting change>[...]

Aero-News: Quote of the Day (04.22.18)

"For those reasons, a key measure of success is not, 'Did we provide the most flights possible?' but 'Did we provide the most comfortable flights possible?'—for instance, by >[...]

ANN's Daily Aero-Linx (04.22.18)

Aero Linx: The Airline Pilot's Historical Society The Airline Pilot's Historical Society is a non-profit, charitable foundation whose purpose is to educate through the preservation>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2018 Web Development & Design by Pauli Systems, LC