/r/space: news, articles and discussion

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The original was posted on /r/space by /u/chrisdh79 on 2025-07-03 14:27:34+00:00.

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The original was posted on /r/space by /u/TeixeiraJoaquim657 on 2025-07-03 14:24:22+00:00.

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The original was posted on /r/space by /u/nick9000 on 2025-07-03 06:04:17+00:00.

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The original was posted on /r/space by /u/coinfanking on 2025-07-03 03:19:16+00:00.

Early on Wednesday, the European Space Agency confirmed that the object, tentatively known as A11pl3Z, did indeed have interstellar origins.

This is the third object suspected to be of interstellar origin that has been observed passing through the Solar System. Astronomers expect to find more with new tools designed to identify near-Earth objects. The first of these was ʻOumuamua, discovered in 2017, when it was already moving away from the Sun. It was likely cigar-shaped, and astronomers could only speculate about its nature and age. A couple of years later, astronomers found another object, 2I/Borisov, that was determined to be a rogue comet passing through the Solar System.

Now, with A11pl3Z, the hunt begins anew as astronomers will attempt to glean details about this interstellar interloper.

NASA's Center for Near Earth Object Studies has begun to post preliminary data about the object here. It poses no threat to Earth and, unfortunately, it appears that our planet will be on the opposite side of the Sun when the object makes its closest approach.

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The original was posted on /r/space by /u/ye_olde_astronaut on 2025-07-03 02:06:38+00:00.

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The original was posted on /r/space by /u/New_Scientist_Mag on 2025-07-02 17:57:22+00:00.

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The original was posted on /r/space by /u/TheGuyThatAteYourDog on 2025-07-01 20:46:49+00:00.

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The original was posted on /r/space by /u/vfvaetf on 2025-07-02 20:09:26+00:00.

Original Title: Former astronaut Terry Virts on new NASA budget - "It's really, really bad. Please call your congressmen, please call your senators. Please call the White House and let them know that this is ridiculous and you expect something better out of America. It's a disaster."

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The original was posted on /r/space by /u/forbes on 2025-07-02 18:15:20+00:00.

A 54-pound meteorite from Mars, believed to be the largest piece of the planet currently on Earth, will be sold to the highest bidder later this month in a Sotheby’s auction that is expected to rake in between $2 million and $4 million.

Read more: https://go.forbes.com/c/31xh

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The original was posted on /r/space by /u/Well_Socialized on 2025-07-02 15:17:11+00:00.

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The original was posted on /r/space by /u/chrisdh79 on 2025-07-02 13:42:34+00:00.

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The original was posted on /r/space by /u/Andromeda321 on 2025-07-02 13:39:09+00:00.

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The original was posted on /r/space by /u/Krg60 on 2025-07-02 13:37:52+00:00.

Though the orbital elements may be further refined, this is almost certainly an interstellar object; with an eccentricity of ~6, it's basically screaming out of interstellar space. Its estimated size (~20 km) is much greater than that of Borisov or ʻOumuamua.

Stay tuned! https://earthsky.org/space/new-interstellar-object-candidate-heading-toward-the-sun-a11pl3z/

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The original was posted on /r/space by /u/The_Rise_Daily on 2025-07-02 10:38:08+00:00.

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The original was posted on /r/space by /u/FrankyPi on 2025-07-01 10:52:45+00:00.

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The original was posted on /r/space by /u/Shiny-Tie-126 on 2025-07-02 10:37:34+00:00.

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The original was posted on /r/space by /u/godneedsbooze on 2025-07-02 02:28:45+00:00.

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The original was posted on /r/space by /u/EmbarrassedHelp on 2025-07-01 22:11:14+00:00.

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The original was posted on /r/space by /u/itsthelee on 2025-07-01 20:45:49+00:00.

Pretty much as subject says.

Was reading about how neutron stars spin really fast because angular momentum is conserved and they are much smaller than their source star.

Which got me thinking - black holes are much much much more compact than a neutron star, potentially infinitely so (if we interpret the singularity literally), so shouldn’t the measurable rotation of a black hole be basically infinitely fast (or at least at like c after some relativistic effects are taken into consideration )?

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The original was posted on /r/space by /u/Goregue on 2025-07-01 19:32:57+00:00.

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The original was posted on /r/space by /u/yahbluez on 2025-07-01 10:25:21+00:00.

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The original was posted on /r/space by /u/johnabbe on 2025-07-01 13:56:56+00:00.

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The original was posted on /r/space by /u/ku8475 on 2025-07-01 13:44:24+00:00.

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The original was posted on /r/space by /u/vfvaetf on 2025-07-01 12:05:24+00:00.

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The original was posted on /r/space by /u/whyisthesky on 2025-07-01 11:24:08+00:00.