btaf45

joined 1 year ago
sorted by: new top controversial old
President Biden is now posting into the fediverse in c/technology@lemmy.world
[–] btaf45@kbin.social 1 points 7 months ago (1 children)

How do you do that?

President Biden is now posting into the fediverse in c/technology@lemmy.world
[–] btaf45@kbin.social 3 points 7 months ago* (last edited 7 months ago)

King Charles III isn't my king either. Still a king though. And doing a much better job than King Charles I

President Biden is now posting into the fediverse in c/fediverse@lemmy.world
[–] btaf45@kbin.social 1 points 7 months ago

And some usenet servers too while they are at it.

President Biden is now posting into the fediverse in c/fediverse@lemmy.world
[–] btaf45@kbin.social 1 points 7 months ago (1 children)

Do you know how to do this?

18
Astronomers use Webb data to measure rapid increase in oxygen in the early universe (phys.org)
 

Using new data from the James Webb Space Telescope, astronomers have measured the abundance of oxygen in the early universe. The findings, accepted for publication in The Astrophysical Journal Supplement Series and posted to the arXiv preprint server, show that the amount of oxygen in galaxies increased rapidly within 500–700 million years after the birth of the universe, and has remained as abundant as observed in modern galaxies since then. This early appearance of oxygen indicates that the elements necessary for life were present earlier than expected.

Do gravitational waves exhibit wave-particle duality? in c/astronomy@mander.xyz
[–] btaf45@kbin.social 1 points 1 year ago

When it comes to duality it’s the particles that exhibit wave-like properties individually.

And waves exhibit particle behavior because waves are particles and particles are waves. Light comes in waves. But when we see light it doesn't mean we are seeing a single light photon.

Do gravitational waves exhibit wave-particle duality? in c/astronomy@mander.xyz
[–] btaf45@kbin.social 0 points 1 year ago

They seem to think the gravity waves are a property of gravitons.

The article talks about gravitational waves, not gravity waves. It is believed that gravitational radiation is similar to electromagnetic radiation. This would mean that gravitational waves are made up of particles called gravitons. But as the article says, we don't know that for sure because we haven't been able to detect gravitons yet.

Do gravitational waves exhibit wave-particle duality? in c/astronomy@mander.xyz
[–] btaf45@kbin.social 1 points 1 year ago (2 children)

Gravity waves are completely different from gravitational waves.

https://coco1453.wordpress.com/home/gravity-related-terms/

Gravitational waves are not 'mechanical waves'. It is thought that gravitational radiation is a lot like electromagnetic radiation. Therefore gravitational waves might work like light waves, and have a particle like light does.

19
Dwarf galaxies stripped of stars prove to be the missing link in the formation of rare ultra-compact dwarf galaxies (phys.org)
 

Astronomers using the Gemini North telescope, one-half of the International Gemini Observatory operated by NSF's NOIRLab, have captured the eroding remains of more than 100 dwarf galaxies as they transition into ultra-compact dwarf galaxies, objects with masses much greater than star clusters yet much smaller than dwarf galaxies. These findings confirm that many ultra-compact dwarf galaxies are likely the fossil remains of normal dwarf galaxies that have been stripped of their outer layers.

10
U.S. military’s X-37B mini-shuttle to launch on SpaceX Falcon Heavy for the first time (spaceflightnow.com)
 

The U.S. military's experimental spaceplane will soon soar to orbit using a SpaceX Falcon Heavy rocket for the first time, a Pentagon news release announced. The X-37B spacecraft will launch from the

11
How recently have we understood the Universe? (bigthink.com)
 

While humanity has been skywatching since ancient times, much of our cosmic understanding has come about only recently. Very recently.

19
NASA telescope reveals 7 new planets orbiting distant star "hotter than the sun" (www.cbsnews.com)
 

NASA described the planets as "scorching" and "bathed" in heat emitted by a distant host star.

104
There are 40 quintillion black holes in our Universe (bigthink.com)
 

For the first time, astronomers have created a data-driven estimate for how many black holes are in our Universe: more than anyone expected.

40
Ask Ethan: How did the Universe truly begin? (bigthink.com)
 

If you said "with the Big Bang," congratulations: that was our best answer as of ~1979. Here's what we've learned in all the time since.

18
Scientists Puzzled by Stars That Disappeared From the Sky (futurism.com)
 

More than 70 years ago, astronomers were doing a sky survey when three bright stars they just saw disappeared, never to be seen again.

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NASA Brings Back Actual Sample Of Asteroid But Can't Open The Lid (www.iflscience.com)
 

NASA has hit a significant problem. Two fasteners are stuck.

2
Retirement plan derailed: Will you be among the 40% forced to stop working earlier than expected? (www.marketwatch.com)
 

The average retirement age in the U.S. is 61, according to a 2022 Gallup survey. But the target age for retirement is 66.

19
Ask Ethan: Did time run slower in the early Universe? (bigthink.com)
 

Headlines have blared that quasar ticking confirms that time passed more slowly in the early Universe. That's not how any of this works.

1
Here's what the first 5000 exoplanets have taught us (bigthink.com)
 

In 1990, we only knew of the planets in our own Solar System. Today, the exoplanet count is more than 5000. Here's what we've learned.

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