Reach for the Stars B

[bernard]

Question Marathons Explained

[treesdea]

I'm not really sure how Reach for the Stars is structured, but I'll take a jab at it!
1. Name 5 constellations visible during June.
2. How far away is Betelgeuse in light years to the nearest 10?
3. Brightest star in the night sky (as perceived by people)?

[D39IJ11]

1. Bootes, Lupus, Libra, Ursa Major, Ursa Minor
2. 720 light years
3. Sirius

Also, for Question 1 I think it depends on the hemisphere you are in.

My Questions

1. When is the Roman Space Telescope scheduled to launch (month and year), and what will it be designed to study?
2. What is Kepler's first law of planetary motion?
3. Give a brief description on the characteristics of young stars like T Tauri or HL Tauri.

[rubikscubeviolin]

click to see answers (Click to Show Hidden Text)

 1. may 2027, and it will study dark energy and dark matter
2. each planet's orbit around the sun is elliptical
3. young pre main sequence variable stars on the hayashi track. mostly consist of F,G,K,M stars

[Sapphire]

You need to give new questions when answering in a question marathon!

Here are some math questions:
Bob is a star. Alice is a snail living on a planet that orbits around Bob.
1. If Bob's temperature doubles, assuming everything else remains constant, by what factor does its luminosity increase?
2. Bob's distance to Alice triples. How many times dimmer does Bob now look to Alice?
3. The semi major axis of Alice's orbit around Bob quadruples. How many times longer is Alice's year now?