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Solar System
- Thread starter Drone
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The stunning arch of the Milky Way stretches across the Chilean night sky, accompanied by the Magellanic Clouds on the left and admired from the control building of ESO’s Paranal Observatory, home to the Very Large Telescope (VLT).
This image, taken from aboard the ISS, shows the aurora australis as it streams across the Earth's atmosphere as the station orbited 271 miles above the southern Indian Ocean in between Asia and Antarctica.
This image from the NASA/ESA Hubble Space Telescope features AFGL 5180, a beautiful stellar nursery located in the constellation of Gemini. At the center of the image, a massive star is forming and blasting cavities through the clouds with a pair of powerful jets, extending to the top right and bottom left of the image. Light from this star is mostly escaping and reaching us by illuminating these cavities, like a lighthouse piercing through the storm clouds.
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Astronomers Find a ‘Break’ in One of the Milky Way’s Spiral Arms
The newly discovered feature offers insight into the large-scale structure of our galaxy, which is difficult to study from Earth’s position inside it.
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Comet Bernardinelli-Bernstein is coming. It's the largest ever detected - around 150 km wide and will be closest to the Sun in 2031.
One of the largest comets ever seen is headed our way (nationalgeographic.com)
One of the largest comets ever seen is headed our way (nationalgeographic.com)
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Space Lynx
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I still don't understand how that New Horizons spacecraft can escape the gravity of the giant sun. It says it will run out of energy in 2038... its just sooo tiny and thrust is so small... I thought gravity/orbit pull in from the sun would be greater than that. I know its lesser the further you go, but still. I don't get it, lol
just finished video, it was good thanks for sharing
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The key is, it's so far out and moving so fast that it easily overpowers the pull of gravity at that range. Gravity is a tricky and sometimes very unintuitive force of physics.
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It's very peculiar indeed (link is mostly paywalled).
Gravity mysteries: Why is gravity so weak?
The other forces seem to have strengths that are roughly comparable with each other – but again gravity breaks the rule
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Exactly right. Gravity is very weak indeed.
Space Lynx
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I suppose the reason gravity doesn't feel weak to me cause of my spinal cord issues I have, it sure kicks my ass quite often 
but yes if I zoom out, your logic makes sense in outer space. so amazing to think where Voyager is now, what the solar system looks like to Voyager right now... so beautiful, its existence - proof of our manifestation - even if the sun exploded tomorrow, that manifestation most likely will carry some of our story as a self-aware species to the end times...
does entropy exist in outer space? or will voyager simply live forever with no deterioration (assuming it stays far enough away from stars radiation and doesn't hit anything) @Drone
but yes if I zoom out, your logic makes sense in outer space. so amazing to think where Voyager is now, what the solar system looks like to Voyager right now... so beautiful, its existence - proof of our manifestation - even if the sun exploded tomorrow, that manifestation most likely will carry some of our story as a self-aware species to the end times...
does entropy exist in outer space? or will voyager simply live forever with no deterioration (assuming it stays far enough away from stars radiation and doesn't hit anything) @Drone
Space Lynx
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any idea why this comet is green in our solar system? certain kinds of dust can produce different colors??? I am confused
www.theguardian.com
]
Images already taken of comet C/2022 E3 reveal a subtle green glow that is thought to arise from the presence of diatomic carbon – pairs of carbon atoms that are bound together – in the head of the comet. The molecule emits green light when excited by the ultraviolet rays in solar radiation.\
I still don't understand how this can be, why don't we see a bunch of different colored comets then?
Exotic green comet not seen since stone age returns to skies above Earth
Comet C/2022 E3, which orbits the sun every 50,000 years, will be closest to us next Wednesday and Thursday
Images already taken of comet C/2022 E3 reveal a subtle green glow that is thought to arise from the presence of diatomic carbon – pairs of carbon atoms that are bound together – in the head of the comet. The molecule emits green light when excited by the ultraviolet rays in solar radiation.\
I still don't understand how this can be, why don't we see a bunch of different colored comets then?