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James K's user avatar
James K's user avatar
James K's user avatar
James K
  • Member for 9 years, 8 months
  • Last seen this week
24 votes
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Looking for a detailed Milky Way map

24 votes
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What caused this mysterious stellar occultation on July 10, 2017 from something ~100 km away from 486958 Arrokoth?

24 votes

Can I make a black hole with one or two atoms?

24 votes
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How can a supermassive black hole cause so much energy to enlighten its matter when its massive gravity prevents light to escape?

24 votes
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On Mars, why are the seasons "strongly amplified" in the southern hemisphere and masked in the northern hemisphere?

24 votes

Why are sometimes the brightest star of a constellation not named alpha?

24 votes

Why was the standard distance set to 10 parsec and not simply to 1 parsec?

24 votes

Is it coincidence that the earth's rotation and revolution are in the same direction?

23 votes

Why do some supermassive black holes have a * in their name?

23 votes
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In km/h, what actually is the "speed" of Andromeda away from us: cosmologically?

23 votes
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Why do stars twinkle but the Sun doesn't (I'm asking this because the Sun is also a star)

23 votes
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Can you see something active in the sky apart from satellites? Can there be amateur time-domain astronomy?

23 votes
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Sun moves relative to the stellar background?

22 votes

Could Black holes forge heavier elements that have yet to be discovered?

22 votes
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Rotation direction of Pulsars

22 votes

How often does a full moon happen on the weekend?

22 votes
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Did the temporary asteroid name DA₄₂ arise naturally and fortuitously (as a precursor to a Douglas Adams namesake)? Or did someone help it along?

22 votes

Does the universe have a celestial north?

22 votes

Do the inner-Earth planets actually align with the constellations we see?

21 votes
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Can the gravitational redshift of our sun be measured?

21 votes
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What is the mathematical condition for the statement: "gravitationally bound"?

21 votes
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Finding Scorpius in the Milky Way panorama

21 votes

Why can we still 'see' the CMB

21 votes
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Is the measurement of distance and position of remote celestial bodies accurate?

21 votes

Are there any stars that orbit perpendicular to the Milky Way's galactic plane?

21 votes

Can the Earth be used as a gravitational lens?

21 votes

Why does the Milky Way appear to form an arch shape across the sky?

21 votes
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Why Earth does not have rings?

21 votes
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Is Earth unique in its fairly clear atmosphere?

21 votes

What is this celestial phenomenon in the video?

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