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Astronomy
Kurt Hikes's user avatar
Kurt Hikes's user avatar
Kurt Hikes's user avatar
Kurt Hikes
  • Member for 4 years, 6 months
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question
28
Why don't (or can't) stars be more than 325 or so times the mass of the sun? What limits their size?
Jul 24, 2020
question
21
Why doesn't dark matter clump strongly in the center of galaxies, since it doesn't feel either radiation pressure or the Pauli exclusion effect?
Jul 13, 2022
question
20
Why is there so little nitrogen in the Martian and Venusian atmospheres?
Jul 3, 2020
question
18
How can astronomers pinpoint the location of the source of a neutrino?
Mar 23, 2021
question
18
Why isn't most hydrogen in the universe molecular (diatomic), instead of atomic (monoatomic)?
Apr 8, 2021
question
17
Why do cosmologists assume that inflation began shortly after the Big Bang, rather than at the exact start?
Apr 20, 2023
question
17
In the onion-like elemental layers of a large mature star the neon is closer to the surface than oxygen, even though it is more massive... Why?
Jul 14
question
13
Why is the L3 Lagrangian point not perfectly stable? And why is the Earth-Sun L3 point a bit less than one A.U.?
Sep 20, 2021
question
12
How can a black hole have a charge, or be charged?
Jul 12, 2021
question
12
How do we know that objects that appear in duplicate or triplicate, etc. due to strong gravitational lensing aren't actually multiple objects?
Nov 3, 2021
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35
Why isn't 'chemically-strengthened glass' made with potassium carbonate to begin with?
27
Why no proton microscopes? Proton diffraction; or proton scattering experiments? Proton crystallography?
18
Why, precisely, is argon used in neutrino experiments?
16
Why doesn't NASA or SpaceX use ozone as an oxidizer for rocket fuels?
14
Do the SpaceX Falcon-9 rockets use foam insulation similar to the Space Shuttle? Is it still a potential problem?