Jump to content

Sign in to follow this  
Dominique_K

Counting the stars

Recommended Posts

The European Space Agency has just released a catalogue of  more than 300 000 stars that are at a maximum of 100 parsecs (326 light-years) away around the sun.

The article  Gaia EDR3 - GCNS - Gaia - Cosmos (esa.int)

and a video of a 3D travel through these stars.The vector representation made me think (absurd comparison I know) of the brownian motion . How tiny in our Galaxy is this bubble of stars !  

 

 

  • Like 4

Dominique

Simming since 1981-  4770 @ 4.4 GHz and a 1080 @ 2560*1440 - Warthog HOTAS - MFG pedals -

 

Share this post


Link to post

That was great. 👍 And who knows, maybe, just maybe, we will develop something like an Alcubierre warp drive and be out there amongst the stars one day.

  • Like 1

Share this post


Link to post

One two three, O'Leary, four five six O'Leary...this will take awhile...

Share this post


Link to post

Thanks for post that. Very relaxing to watch. They should have kept zooming out to show some galactic scale. Talk about feeling small...

When they talk about star vectors, what is the reference point? The sun? Galactic center?

 

  • Like 1

Richard Chafey

 

i7-8700K @4.8GHz - 32Gb @3200  - ASUS ROG Maximus X Hero - EVGA GTX1080Ti Sc - 3840x2160 Res - CH Fighterstick - CH Pro Throttle - Crosswind V3 pedals

MSFS 2020, P3D 5.1, DCS, X-Plane 11

 

Share this post


Link to post

The reference point of the vectors is almost certainly from the Sun (or to be more precise, the Gaia telescope that made the observations).

  • Like 1

Christopher Low

UK2000 Beta Tester

FSBetaTesters3.png

Share this post


Link to post

Someone went to a heck of a lot of trouble dangling all 331311 * torches above our flat earth... 

* one has a burnt out bulb.. 


Mark Robinson

"What's it doing now?"

Author of FLIGHT: A near-future short story (ebook available on amazon)

I made the baby cry - A2A Simulations L-049 Constellation

Sky Simulations MD-11 V2.2 Pilot. The best "lite" MD-11 money can buy (well, it's not freeware!)

Share this post


Link to post
On 12/3/2020 at 10:38 PM, RichieFly said:

 

When they talk about star vectors, what is the reference point? The sun? Galactic center?

 

From the GAIA site :

The Gaia Celestial Reference Frame (Gaia-CRF2) is realised by the accurate positions of 556,869 quasars. This is the first realisation of a non-rotating full sky optical reference frame meeting the ICRS prescriptions, i.e. built only on extragalactic sources constrained to have no global rotation. With a mean density of more than 10 quasars per square degree it represents a more than 100-fold increase in the number of objects from the current realisation at radio wavelengths.

https://www.cosmos.esa.int/web/gaia/gaiadr2_rf

 

 

  • Like 2

Dominique

Simming since 1981-  4770 @ 4.4 GHz and a 1080 @ 2560*1440 - Warthog HOTAS - MFG pedals -

 

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    40%
    $10,200.00 of $25,000.00 Donate Now
×
×
  • Create New...