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Units in optical and radio spectral data cubes: Flux vs Brightness

modified 4 hours ago astrosnapper 1,182
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Stellar core mass as a function of metallicity

asked 5 hours ago N. Steinle 121
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Is it possible that the Universe is expanding due to additional Big Bang events?

answered 9 hours ago called2voyage ♦ 4,001
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2
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Beginning of space-time

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Is the point of this paper to say that Pluto's status as a planet should have been handled scientifically, rather than by a vote?

answered 14 hours ago FJC 840
1
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1
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93
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Direction of Earth’s poles relative to the Sun’s movement around the Galaxy

modified 21 hours agoCasual Flat Tie Red Shoes Women Espadrilles Ladies Sneakers Round Shallow Up Comfortable Loafers Toe ZS8nqw Teunis Dokter 1
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Why does the half moon appear to have a “nose”?

answered yesterday Alphecca 153
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0
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21
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Does Celestia respect 'setframe' coordinate systems?

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Is there a more modern/updated paper than Hurley's 2000 SSE?

asked 2 days ago N. Steinle 121
3
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Celestron Astromaster EQ130

answered 2 days ago Mike G Puma Puma 363650 Puma 363650 363650 Puma Black Black Black 363650 4,773
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Error when calculating Alt/Az from Ra/Dec

modified 2 days ago Michael Siebenmann 6
4
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4
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How to figure out what something in the sky is?

modified 2 days ago stackzebra 121
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Calculate eclipse days and duration of satellite

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modified Sep 14 at 20:00 Community ♦ 1
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What percentage of the celestial sphere can the Moon cover?

answered Sep 14 at 16:54 JohnHoltz 1,791
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