Questions tagged [planet]
Questions regarding astronomical bodies orbiting stars which are of proper size to be called planets.
75 questions
4votes
1answer
279views
Would the Earth still precess if it were an ideal sphere?
I am trying (unsuccessfully) to acquire an intuitive understanding of planetary precession. Is Earth’s precession Torque-free Precession due to its asymmetry as per https://en.wikipedia.org/wiki/...
- 33k
7votes
1answer
395views
What would Venus look like without acid clouds?
Despite its unpleasant surface conditions, Venus is undoubtedly one of the most beautiful worlds in the solar system when viewed from space. It’s huge clouds of sulphuric acid make the planet ...
1vote
2answers
244views
best way to generate electricity on any planet's dark side
What options are available for generating electricity in a space colony if it is at the planet's darkest point all year around without help from nearby outposts?
- 109
0votes
0answers
46views
Most accurate method to find exoplanets?
NASA has found thousands of exoplanets in space using their powerful telescopes. How exactly does NASA do so and what is the best method? I'm assuming that NASA uses some sort of sensor to detect ...
- 1,573
2votes
1answer
163views
Density vs ocean planet?
According to Nasa.gov: Details: Ocean planets are long imagined but difficult to confirm, and TOI-1452 b is no different. About 70% larger than Earth, and roughly five times as massive, its density ...
- 1,573
10votes
4answers
2kviews
Is it possible for a planet to be habitable by just geothermal activity
Is it possible for a planet (with an atmosphere and breathable air obviously) to be super far away from its star but still have a habitable surface temperature just from geothermal activity alone, if ...
- 153
6votes
2answers
279views
What is the largest possible rocky body? [closed]
Suppose you start with a rocky sphere about 12,742 kilometers in diameter and continuously add more rocky material such that you don't smash this sphere to bits. What is the upper limit for this? ...
- 161
0votes
1answer
92views
Wondering about materials [closed]
I am currently designing a Revit project on the planet Mars I was wondering what a wall on a base like structure need to consist of to protect its from the planet atmosphere. any thoughts ? regards, ...
- 11
1vote
2answers
459views
When and where on Planet Mars are the Sun's rays the most blueshifted?
Let's say for a moment that the spin of a planet causes the Sun's rays to be blue-shifted in the morning. As far as I know, redshift occurs in steps of like 2.6 km/s or something like that. We can't ...
0votes
1answer
170views
Intercommmunication between crewed space missions in all planets of solar system [closed]
As we know Human Communication taking place between Man in space, Man on Moon, Man on Mars (Future exploration) with Human beings on Earth planet where we are living with the help of control stations ...
18votes
5answers
4kviews
Is Mohs scale of mineral hardness applicable for rocks and minerals of terrestrial planets other than Earth?
The Mohs scale of mineral hardness is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. Now there is ...
- 1,021
0votes
1answer
748views
Which are the correct input parameters for NASA Horizons query to get the right Alt/Az data needed to plot analemmas for various planets?
I tried to replicate these analemmas, taken from a discussion of the equation of time in the following post: http://pbarbier.com/eqtime/eqtime.html: I used "Quantity n.4" for Nasa Horizons ...
- 3,053
30votes
4answers
6kviews
Could one of the interstellar probes discover Planet IX by accident?
Could one or some of the spacecraft sent beyond the Kuiper belt discover (or even disprove) the hypothetical Planet IX? That doesn't necessarily mean coming so close you'd recognize the planet in ...
- 515
0votes
1answer
985views
What would happen if Jupiter became solid like Earth and condensed to the size of Earth? [closed]
I just want to know, hypothetically, what if Jupiter was solid and condensed to the size of Earth. What would it look like? Would it's characteristics (gravity, orbit, rotation, etc) stay the same, or ...
1vote
1answer
89views
Is the sunlight reflected off of either the atmosphere or surface of a planet polarized?
Is the reflecting off of the surface of the terrestrial planets (those with or without an atmosphere), or the gas- or ice-giants, polarized, or unpolarized like the sunlight before it is reflected?
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