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Space and Astronomy Megathread (MERGED) - Part 1

The bright blue/green flash of the fireball indicates the burning of magnesium. One type of meteorite known to bear magnesium are the "pallasites," which contain large olive-green crystals that are a form of magnesium-iron silicate called olivine.

Though the origins of pallasites are somewhat mysterious, scientists think they could form when asteroids melt, with denser material sinking to their cores. Pallasites could come from the boundaries between an asteroid's metallic core and its silicate, olivine-rich mantle.
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Epsilon Tauri: Star with Planet
Image Credit & Copyright: Reg Pratt

CG4: The Globule and the Galaxy
Image Credit: CTIO, NOIRLab, DOE, NSF, AURA; Processing: T. A. Rector (U. Alaska Anchorage/NSF’s NOIRLab), D. de Martin & M. Zamani (NSF’s NOIRLab)

Green Aurora over Sweden
Image Credit & Copyright: Göran Strand

Unraveling NGC 3169
Image Credit & Copyright: Christophe Vergnes, Aziz Kaeouach

M78 from the Euclid Space Telescope
Image Credit & License: ESA, Euclid, Euclid Consortium, NASA; Processing: J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi

A Solar Filament Erupts
Image Credit: NASA's GSFC, SDO AIA Team

Chamaeleon I Molecular Cloud
Image Credit & Copyright: Amiel Contuliano

Manicouagan Impact Crater from Space
Image Credit: NASA, International Space Station Expedition 59

Stairway to the Milky Way
Image Credit & Copyright: Marcin Rosadziński

A Lunar Corona over Paris
Image Credit & Copyright: Valter Binotto

The Nebulous Realm of WR 134
Image Credit & Copyright: Xin Long

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