Science Questions

What is the 'background' when measuring using parallax?

Tue, 24th Sep 2013

Listen Now    Download as mp3 from the show Exploring the Solar System

Question

Derek McComiskey asked:

I've just been listening to this week's programme, with the piece about mapping the milky way using parallax. This left me with two questions:

- To observe something moving because of parallax, you need to see the movement against a more distant background. What are they using as background?

- Are there still significant risks with launches into orbit. It was made to sound so mundane!

 

Thanks,

 

Derek McComiskey

Answer

Transcript to follow.

Multimedia

Subscribe Free

Related Content


-
Not working please enable javascript
EPSRC
Powered by UKfast
STFC
Genetics Society
ipDTL