Phil Plait

@badastro
12.5K Followers
78 Following
859 Posts

Hubble watches as a comet tears itself apart. Bonus: It was seen by accident!

https://badastronomy.beehiiv.com/p/hubble-accidentally-catches-a-comet-tearing-itself-apart

Hubble (accidentally!) catches a comet tearing itself apart

Images show it fragmenting into several smaller pieces. Plus: I’m on EnterpriseSplaining.

Bad Astronomy Newsletter

Just how massive can a star get? Pretty danged massive... but it depends on when you look. A thing I wrote for Scientiifc American, just like I do every Friday!

https://www.scientificamerican.com/article/whats-the-most-massive-star-in-the-universe/

What’s the most massive star in the universe?

Just how big can a star become? The answer depends on when in cosmic history you’re asking the question

Scientific American

So, on top of everything else bad about these zillion-constellation satellite swarms, the debris from them burning up is making the sky brighter.

https://badastronomy.beehiiv.com/p/space-debris-is-hurting-us-in-another-way-making-the-sky-brighter

Space debris is hurting us in another way: making the sky brighter

Also, the blue stragglers mystery may finally be solved

Bad Astronomy Newsletter

If you throw a bit of coin my way you can read about the colorful shenanigans of an extragalactic red supergiant (one of the largest stars we know of) or how the sun fries little asteroids that get too close to it!

https://badastronomy.beehiiv.com/p/a-red-supergiant-that-isn-t-yellow

A red supergiant that isn’t yellow

WOH G64 has apparently kept its hue. Also, the sun does seem to be able to fry asteroids that venture too close

Bad Astronomy Newsletter

Here's a fun thought: Does the TV show Star Trek exist in the Star Trek universe?

Probably not, but this raises a lot of cool questions to geek out over!

https://badastronomy.beehiiv.com/p/does-scifi-exist-in-a-scifi-universe

🖖

[And yes, that's me in front of the ACTUAL ENTERPRISE MODEL USED IN TOS]

Does scifi exist in a scifi universe?

A fun rabbit hole pondering of a metatopic

Bad Astronomy Newsletter

So, have astronomers found a supermassive black hole blasted away from its galaxy and barrelling through intergalactic space... or is it just a weird galaxy?

https://www.scientificamerican.com/article/have-astronomers-found-a-runaway-monster-black-hole/

Have astronomers found a runaway monster black hole?

Despite years of debate and follow-up studies, an odd streak of cosmic light still defies a final explanation. Is it a giant black hole screaming through intergalactic space?

Scientific American

Premium subscribers to my newsletter can read today about a gorgeous but weird galaxy that is not trying terribly hard to hide its cannibalistic tendencies.

https://badastronomy.beehiiv.com/p/another-gorgeous-hubble-galaxy-but-it-has-many-secrets

Another gorgeous Hubble galaxy, but it has many secrets

NGC 7722 is a weird hybrid of galaxy types. What does that tell us?

Bad Astronomy Newsletter

Today's Bad Astronomy Newsletter covers a bunch of news from NASA's DART mission, which whacked an asteroid back in 2022. Very cool stuff including streaks on the asteroid moon's surface, the plume generated, and how the orbit of the binary pair changed!

https://badastronomy.beehiiv.com/p/way-too-much-dart-news

Way too much DART news

The NASA spacecraft hit the moon Dimorphos, but that yanked the whole system hard enough to measure. Also, the plume was modeled in 3D, and the bigger asteroid is spitting rocks at its moon. So yeah, a lot.

Bad Astronomy Newsletter

Looks like the moon is safe from a 2032 asteroid impact — unfortunately, kinda — and if you want to keep up with the changing sky, the Rubin Observatory will be happy to alert you millions of times per day.

https://badastronomy.beehiiv.com/p/looks-like-the-asteroid-2024-yr4-won-t-impact-the-moono-plus-rubin-observatory-sends-out-its-first-c

Looks like the asteroid 2024 YR4 won’t impact the moon, plus Rubin Observatory sends out its first cosmic alerts... 800,000 of them!

Supernovae, asteroids, and more: That’s a lot of alerts.

Bad Astronomy Newsletter

Elon Musk has already started plans to launch a million satellites.

Yes. A MILLION.

This is a colossally bad idea, and it's not too late to make your voice heard. I explain everything:

https://www.scientificamerican.com/article/rampant-growth-of-satellite-mega-constellations-could-ruin-the-night-sky/

Rampant growth of satellite mega constellations could ruin the night sky

Satellites are wonders of modern technology that have improved all of our lives. But having more than a million of them in orbit could destroy our view of the heavens and seriously damage our planet

Scientific American