Cosmology Flashcards
1
Q
What is a geostationary satellite ?
A
A satellite that orbits the earth every 24 hours so it appears to remain stationary above a point on the earths surface
2
Q
Why is there a time delay ?
A
The signal needs to be sent to the satellite and then retransmitted back to earth
3
Q
What speed to signals travel at ?
A
Speed of light (300000000 ms-1)
4
Q
What is an exoplanet?
A
A planet which orbits a star outside of the solar system
5
Q
What is a light year ?
A
The distance travelled by light in one year
6
Q
What is needed to sustain life on a planet?
A
Oxygen and liquid water are needed to sustain life
7
Q
What is the largest planet in our solar system ?
A
Jupiter
