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Space and Astronomy Megathread (MERGED) - Part 1



www.space.com

Bright green fireball lights up the skies over Portugal and Spain (photos)

The bright green fireball has stunned the internet and social media users.
www.space.com www.space.com
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.
Click to expand...
 
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Ain_1024.jpg



Epsilon Tauri: Star with Planet
Image Credit & Copyright: Reg Pratt
 
Cg4Galaxy_CtioRector_960.jpg






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)
 
AuroraSweden_Strand_960_Annotated.jpg






Green Aurora over Sweden
Image Credit & Copyright: Göran Strand
 
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Unraveling NGC 3169
Image Credit & Copyright: Christophe Vergnes, Aziz Kaeouach
 
www.google.com

Webb detects most distant black hole merger to date

An international team of astronomers have used the NASA/ESA/CSA James Webb Space Telescope to find evidence for an ongoing merger of two galaxies and their massive black holes when the universe was only 740 million years old. This marks the most distant detection of a black hole merger ever...
www.google.com www.google.com
 
M78_Euclid_960.jpg





M78 from the Euclid Space Telescope
Image Credit & License: ESA, Euclid, Euclid Consortium, NASA; Processing: J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi
 
filament_sdo_960.jpg




A Solar Filament Erupts
Image Credit: NASA's GSFC, SDO AIA Team
 
Cederblad111-110_1024.jpg




Chamaeleon I Molecular Cloud
Image Credit & Copyright: Amiel Contuliano
 
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Manicouagan Impact Crater from Space
Image Credit: NASA, International Space Station Expedition 59
 
www.google.com

Detecting 'Hawking radiation' from black holes using today's telescopes

In 1974 Stephen Hawking famously claimed that black holes should emit particles as well as absorb them. This so-called "Hawking radiation" has not yet been observed, but now a research group from Europe has found that Hawking radiation should be observable by existing telescopes that are capable...
www.google.com www.google.com
 
EiffelCorona_Binotto_960.jpg




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