Gaia making a 3D-map of a Billion stars, new space observatory |
![]() ![]() |
Gaia making a 3D-map of a Billion stars, new space observatory |
![]()
Post
#31
|
|
Junior Member ![]() ![]() Group: Members Posts: 78 Joined: 20-April 05 Member No.: 291 ![]() |
New posted paper is claiming that Gaia will be able to detect 20,000 jupiter mass planets (15-27k technically) over its 5 year mission, and some 70,000 (!) over a 10 year extended mission. For reference, there are around 2000 known exoplanets as of today - and most of those are from the Kepler mission... amazing to think it'll increase by an order of magnitude over a decade. Gaia currently records information on 40 million stars a day - according to a recent tweet approaching 10 billion observed over the mission.
|
|
|
![]()
Post
#32
|
|
![]() Member ![]() ![]() ![]() Group: Members Posts: 264 Joined: 5-February 06 Member No.: 675 ![]() |
Gaia's Data Release 1, based on observations between 25 July 2014 and 16 September 2015, is due out Wednesday. It includes preliminary positions for over 1 billion stars and preliminary positions, parallax, and proper motions for over 2 million stars. Contents summarized at ESA's Gaia DR1.
|
|
|
![]()
Post
#33
|
|
Member ![]() ![]() ![]() Group: Members Posts: 222 Joined: 1-October 06 Member No.: 1206 ![]() |
Wow, Look at the LMC in the hi res png file at
http://www.esa.int/var/esa/storage/images/...rst_sky_map.png No doubt about its spiral structure there! P |
|
|
![]()
Post
#34
|
|
![]() Member ![]() ![]() ![]() Group: Members Posts: 264 Joined: 5-February 06 Member No.: 675 ![]() |
No doubt about its spiral structure there! And the LMC also shows rotation. Arrticle available through ArXiv.. |
|
|
![]()
Post
#35
|
|
Member ![]() ![]() ![]() Group: Members Posts: 461 Joined: 17-November 05 From: Oklahoma Member No.: 557 ![]() |
One of the more entertaining ESA products to come out of the Gaia release is this newly posted YouTube video showing how the Orion constellation will evolve over time:
Orion from now till 450000 AD No corrections made for Betelgeuse possibly blowing up (whose timing is unknown in any event). Also notice the Hyades star cluster moving in. Another earlier YouTube from ESA showed an approximation for the whole sky for five million years. Future of Two Million Stars Recommend going full screen on both of these. |
|
|
![]()
Post
#36
|
|
Member ![]() ![]() ![]() Group: Members Posts: 461 Joined: 17-November 05 From: Oklahoma Member No.: 557 ![]() |
Heads up. The astrometry revolution is about to start.
Gaia's second data release is coming up on April 25th. It will have 22 months worth of observations crunched into it. None of it will be relying on Hipparcos data anymore, it will be purely self contained. Here is a description: Gaia DR2 In other news the spacecraft had a hiccup back in February when it went into safe mode for ten days. It was a transponder problem, and there is some concern it could reoccur. Enough data has already been gathered to date in order to have a Data Release 3 in late 2020. That should be the last release before the final catalog. That is, unless they extend the mission. |
|
|
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 20th April 2018 - 07:10 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here. |
![]() |