All Questions
5 questions
0
votes
1
answer
39
views
Doubt regarding the positioning of starshade in new world's mission of Nasa
The new worlds mission of NASA has an occulter with the telescope, Why did they place the occulter at a distance instead of attaching it to the telescope such that there is a hole as big as the size ...
0
votes
1
answer
91
views
Rayleigh Scattering and Red Giants
Rayleigh scattering is responsible for the color of the sky. Consider a planet with an atmospheric composition similar to Earth's but orbiting a red giant. Suppose further that the planet is in the ...
- 1
2
votes
2
answers
297
views
Habitable zones around other stars
I have a question about measuring the boundaries of habitable zones on other planets.
Is it okay to assume that, if Sun's habitable zone starts at a distance $R_0$ and its luminosity is $L_0$, we can ...
- 125
1
vote
1
answer
189
views
Multiple planets orbiting a star
One way of detecting exoplanets orbiting around a star is the Radial velocity method.
Can this be used to detect multiple planets? Wouldn't the star orbit the center of mass of the whole system with ...
- 344
1
vote
1
answer
4k
views
Is there a simple formula for calculating semimajor axis bounds of "habitable zone"?
I understand that an accurate determination of the bounds of the "habitable zone" for a given stellar system depends on a large number of factors, including many beyond characteristics of the parent ...
- 5,169