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Astronomy : Recent Questions and Answers (Page 8)

Find answers to your questions about Astronomy or help others by answering their Astronomy questions.

Catalogs for type K stars and their planetary systems?

I am doing data collection on all type K stars, and their planetary system so I may develop an algorithm for a planetary formation simulation with the...

Asked on 09/28/2021

1 answer

Can any satellite train still be seen?

I "missed the train" on the Starlink satellites last year, and now it looks like they've separated, and the conservative voices convinced Space X to darken new ones with...

Asked on 09/28/2021

1 answer

Can telescopes determine whether Hygiea is in hydrostatic equilibrium?

10 Hygiea is a spherical body in the main asteroid belt. With future telescopes like the Vera Rubin LSST or the James Webb Space Telescope, can we determine whether Hygiea...

Asked on 09/28/2021 by Ioannes

0 answer

Why don't the inner moons of Jupiter have tidally-induced volcanism?

Volcanism on Io is caused by the fact that it is tidally heated. There are four moons that are closer to Jupiter than Io with higher eccentricities, yet...

Asked on 09/28/2021

3 answer

If the Sun's trajectory were altered, would the solar system follow?

I was reading a text state that the sun is not stationary:"it orbits the Galactic center once approximately every 226 million years as the galaxy spins which is also traveling...

Asked on 09/28/2021 by Jack Rod

2 answer

Would DCBH form supermassive stars first before BH formation

In reading some literature it seems ambiguous (intentionally?) as to the path that Direct Collapse Black Holes (DCBH) take. Some papers do talk about pristine Halos collapsing to form supermassive...

Asked on 09/28/2021 by NotSoSN

1 answer

Closest stable orbit about the sun of an asteroid?

What is the closest perihelion an asteroid in stable orbit could have? Is there a limit defined by orbital mechanics or could an object be in stable orbit, only too...

Asked on 09/28/2021 by Bob516

2 answer

Does the axial tilt of Mercury and Venus vary?

The axial tilt of Mars varies greatly over time, with a tilt varying between 15 and 25° over the last million years, and varying even more over the...

Asked on 09/28/2021

1 answer

Stars in star clusters in SMC and LMC

Is there any catalog or any paper published in any journal that lists the stars discovered under whichever star cluster of the Small Magellanic Cloud (SMC) they belong to? There...

Asked on 02/24/2021 by MycrofD

2 answer

How can I estimate the initial luminosity of a SNIa given initial mass of Ni-56?

The initial portion (and peak) of a SNIa's light curve is powered by the $beta$-decay reaction: $$ ^{56}Ni rightarrow ^{56}Co + e^+ + nu_e + gamma $$ Supposing...

Asked on 02/18/2021 by notadoctor

2 answer

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