Astronomy Weekly Newsletter

Astronomy newsletter

Top new questions this week:

Is Jupiter made entirely out of gas?

I heard that Jupiter is made out of gas. But in school I learned that Jupiter has gravity which is 2.5 times that of Earth (Gravity that can tear apart a comet) and gravity is proportional to mass. ...

gravity jupiter mass gas-giants core  
asked by strikers 11 votes
answered by Wayfaring Stranger 9 votes

What determines the configuration of orbits in a binary system?

There are essentially two configurations of orbits a system with two bodies can have: A configuration where the paths do not cross: A configuation where the paths cross: Note: Size of the ...

orbit binary-star  
asked by HDE 226868 4 votes

Accretion disks - why are they disk-shaped, rather than spherical?

So, the theory (briefly) about accretion disks is that stuff falling into the black hole will most likely not fall straight into it but will miss it and go into orbit, perhaps for a long time, perhaps ...

black-hole accretion-discs  
asked by Max Williams 3 votes
answered by Stan Liou 2 votes

How does radio bandwidth restrict the choice and use of science payload on interplanetary probes?

I asked a question here about returning to Earth a physical memory capsule along with soil samples, as a complement to radio operations as today. This might return a much larger amount of data ...

data-analysis space-probe sample-return  
asked by LocalFluff 3 votes

Is there anywhere I can find some kind of database on all known stars and their properties (mass, surface temperature, radius, and luminosity)?

I have been looking for some kind of collection of all known stars and their individual respective mass/radius/temperature/and luminosity, can you link me to one if it exists? My goal is to write an ...

asked by ChaosOverlord 2 votes
answered by Mathias711 0 votes

Why, in the Solar System, all the mass seems to be concentrated at the centre?

Is this a consequence of planet formation in accretion disks ?

solar-system planets formation planetary-formation  
asked by SuperCiocia 2 votes
answered by HDE 226868 1 vote

Method to determine the amount of reflected starlight necessary for an exoplanet to be visible from a given distance/angle?

What is the method to determine the amount of reflected starlight necessary for an exoplanet to be visible from a given distance/angle? (Not from occlusion but actually visible on its own.) Further, ...

telescope exoplanet life extra-terrestrial space-telescope  
asked by CommaToast 1 vote

Greatest hits from previous weeks:

Where does the Milky Way end?

I was reading this article and it says the following: Researchers measured the mass of the Milky Way and found that our galaxy is approximately half the weight of a neighbouring galaxy known as ...

galaxy milky-way intergalactic-space  
asked by SpringLearner 7 votes
answered by Ilmari Karonen 8 votes

Does the universe have an edge?

I've heard the universe is just an empty cavity. Does the universe have any edge or stop or is it just an infinite empty cavity?

asked by user73898 3 votes
answered by MegaMark 7 votes
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