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

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 04.20.17

Airborne
04.24.17

Airborne
04.25.17

Airborne
04.19.17

Airborne
04.20.17

Airborne
04.21.17

Airborne-Unmanned 04.18.17

Airborne-YouTube

AMA 04.20.17

Airborne
04.24.17

Airborne
04.25.17

Airborne
04.19.17

Airborne
04.20.17

Airborne
04.21.17

Airborne-Unmanned 04.18.17

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

AMA Drone Report 04.20.17: Phantom 4 Advanced, NJ NIMBYism, AMA-DJI Team Up

Also: AUVSI XPO17 LIVE!, Steady Drone Sales, Drone v Shotgun... DJI’s new Phantom 4 Advanced offers a more powerful camera and more upgraded controls. The new upgrades the or>[...]

Airborne-Unmanned 04.18.17: Drones v Volcanoes!, Boston Marathon UAVs, XPO-LIVE!

Also: State Pavilions at XPONENTIAL, MQ-8C Fire Scout, Puma UAS, Drone Bust Drones DO wind up in some of the most amazing places... As evidence by the Universities of Bristol and C>[...]

Passenger Picks Fight With Off-Duty Pilot

Incident Captured On Surveillance Video A scuffle erupted in Terminal C at Kansas City International Airport (KCI) between a passenger and an off-duty American Airlines pilot who h>[...]

Aero-News: Quote of the Day (04.25.17)

"...safe, tested and legal to operate in the United States in uncongested areas under the Ultralight category of FAA regulations. We’ve designed our first version specificall>[...]

Airbus Helicopters Increases Engine Power On H145

Expands Flight Envelope For One-Engine-Inoperative Power Airbus has extended the flight envelope of the H145 by enhancing the helicopter’s OEI power. The acronym OEI stands f>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC