Top Questions

30 votes
2 answers
4k views

How precise are future Solar eclipse timing, path and dates, what could change timing/path?

5 votes
7 answers
3k views

The darkness that is equivalent to the block of 99.5% of the sun

16 votes
2 answers
5k views

Why is there a year 1 B.C., a year 0, and a year 1 A.D. in NASA’s Five Millennium Canon of Solar Eclipses?

8 votes
3 answers
4k views

Can a lunar eclipse happen at night and be followed by a solar eclipse the next day?

10 votes
4 answers
2k views

Why are the solar prominences visible during a total solar eclipse - orange? Is the sun orange?

11 votes
3 answers
3k views

Do Pulsar stars make actual sounds?

3 votes
3 answers
3k views

What is this celestial phenomenon in the video?

15 votes
2 answers
5k views

What caused pink flares during the eclipse

6 votes
5 answers
2k views

What are the best options for watching total or partial solar eclipse during bad weather conditions?

14 votes
1 answer
3k views

Earth is Tilted, but in reference to What Object / relative to what?

4 votes
4 answers
2k views

What is the apparent size of the Earth and Sun from Moon

13 votes
1 answer
1k views

Can stars form in the stellar halo?

2 votes
3 answers
1k views

Could a planet orbit a gravitational wave concentration

0 votes
3 answers
693 views

Gravitational forces [closed]

5 votes
3 answers
2k views

Is the gravitational constant really constant over our Universe?

0 votes
1 answer
14k views

Is it safe to view a solar eclipse with the naked eye during totality?

2 votes
4 answers
636 views

Can emergency blanket material be used for making a homemade solar filter for a digital camera?

3 votes
2 answers
620 views

Will Earth become a gas giant when the Sun expands in 5 billion years?

4 votes
1 answer
899 views

Can Neutron Star merger remnants solve the black hole mass gap? Why can't we observe them?

5 votes
1 answer
491 views

Can an astronomer fully work remotely? [closed]

4 votes
1 answer
483 views

Can a Nova occur outside of a binary star system?

6 votes
1 answer
473 views

Does the Final-Parsec problem apply to stellar collisions?

3 votes
2 answers
280 views

The sun path angle of elevation

3 votes
1 answer
480 views

Measure the radius of the earth using the sun?

5 votes
1 answer
158 views

Would it be practical to map out the Kuiper Belt and Oort Cloud via Radar?

1 vote
2 answers
75 views

What objects (if any) are there above or below the ecliptic, or just vaccum/gases

0 votes
2 answers
149 views

Shadow Bands: How can atmospheric turbulence obscure the sun-crescent immediately before a total solar eclipse? and why are they 'bands'?

5 votes
1 answer
190 views

Relative inclination with respect to line of sight

0 votes
3 answers
92 views

How long would a day be in an earth like - same size and all - planet but with double earth's orbit in time

3 votes
1 answer
140 views

Is the Moon really oscillating around its orbit as seen from Earth?

2 votes
2 answers
106 views

What exactly was "The curse of Sisyphus" and why did it take so long to find out about the radar detection of its companion?

1 vote
1 answer
91 views

Is there a specific constant name for the fifth root of 100?

3 votes
1 answer
134 views

Delta T used by US Naval Observatory

4 votes
1 answer
118 views

Extend CDF to physical range

0 votes
2 answers
87 views

the difference between the heliocentric and the geocentric

2 votes
1 answer
143 views

A couple of questions on Hawking radiation

1 vote
1 answer
85 views

What is the explanation for discrepancies in RA values at Santa Maria Degli Angeli e dei Martiri in Rome

2 votes
2 answers
137 views

Since John Herschel was first to make a photograph on a glass plate in 1839, why was the first astronomical photograph not taken until 1840 by Draper?

2 votes
1 answer
151 views

Automated (and hopefully free) systems I can subscribe to sending email or SMS text message when the T Coronae Borealis Nova becomes visible?

1 vote
2 answers
81 views

Is It Possible to See the Sun's Corona Appearing to Flare Out From Behind the Moon During a Total Solar Eclipse?

2 votes
2 answers
99 views

Will a circular orbit cause doppler shift?

1 vote
1 answer
69 views

How can I plot a rotary cam for the equation of time? [closed]

4 votes
1 answer
84 views

Nature of Supernova Ejecta: Solid Chunks vs. Gas/Dust?

4 votes
1 answer
64 views

How to speed up REBOUND python simulations on a Jupyter notebook?

2 votes
1 answer
102 views

Earth-Moon receding-approaching cycle?

2 votes
2 answers
77 views

Is the Moon's orbital plane angle relative to the ecliptic constant?

0 votes
1 answer
67 views

What element drives pulsations in T Tauri Stars?

2 votes
0 answers
138 views

What happens at the edge of a finite and "bounded" universe?


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