Astrophysics

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In memory of nFA

Last post by Greenman « Fri Feb 03, 2023 4:05 pm
Replies: 37
by Gordon » Sat Dec 03, 2022 6:03 pm
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First post

I have some very sad news to past along.

Our top poster and long time member of both AstronomyForum.net and TheSkySearchers.com passed away November...

Last post

A sad day for us all, from star dust to star dust - farewell.
37 Replies

1572 Views

Last post by Greenman
Fri Feb 03, 2023 4:05 pm
Astrophysics Videos

Last post by notFritzArgelander « Mon May 30, 2022 5:39 am

by notFritzArgelander » Mon May 30, 2022 5:39 am

TEAM Comment: This stickie was suggested by nFA and we will be posting links to videos of different speakers discussing Astrophysics topics. If any...

0 Replies

512 Views

Last post by notFritzArgelander
Mon May 30, 2022 5:39 am
The dark energy conundrum

Last post by SkyHiker « Sat Apr 01, 2023 4:46 pm
Replies: 1
by Gmetric » Sat Apr 01, 2023 12:41 am

First post

Why is the calculated value of dark energy 120 orders of magnitude different from what we observe? Ethan speculates on why.

Last post

I wonder if dark energy isn't simply a randomly generated fluctuation in spacetime curvature in the infinitesimally small fraction of the universe...

1 Replies

26 Views

Last post by SkyHiker
Sat Apr 01, 2023 4:46 pm
A chat about Einstein, quantum physics and unification.

Last post by helicon « Fri Mar 31, 2023 6:30 pm
Replies: 3
by Gmetric » Fri Mar 31, 2023 6:14 am

First post

This is a 2hr chat between Sir Roger Penrose and Eric Weinstein about the formalisation of Einstein, Spinors, Twistor Theory, a whole bunch more and...

Last post

Really cool - thanks Arry

3 Replies

53 Views

Last post by helicon
Fri Mar 31, 2023 6:30 pm
Biggest Black Hole

Last post by Frankskywatcher « Fri Mar 31, 2023 5:07 pm
Replies: 8
by Frankskywatcher » Thu Mar 30, 2023 1:18 pm

First post

I can’t believe how massive it is !

Last post

Things get large in the wild :)

There is also large stars that make Sol massively tiny in comparrison.

5 billon try wrapping your brain around...

8 Replies

90 Views

Last post by Frankskywatcher
Fri Mar 31, 2023 5:07 pm
ER=EPR what’s it all about?

Last post by SkyHiker « Fri Mar 31, 2023 2:09 pm
Replies: 1
by Gmetric » Fri Mar 31, 2023 12:49 pm

First post

Ethan weighs in on this one.

Last post

Very interesting Arry. Searching van Raamsdonk a bit more I found another nice link on the same,

1 Replies

29 Views

Last post by SkyHiker
Fri Mar 31, 2023 2:09 pm
How much of the universe can humanity observe.

Last post by Lady Fraktor « Fri Mar 31, 2023 4:46 am
Replies: 2
by Gmetric » Thu Mar 30, 2023 12:03 am

2 Replies

52 Views

Last post by Lady Fraktor
Fri Mar 31, 2023 4:46 am
New science coming from New Horizons

Last post by Lady Fraktor « Fri Mar 31, 2023 4:34 am

by Lady Fraktor » Fri Mar 31, 2023 4:34 am

Contrary to Mr.Belzebrown and the IAU at the time, Pluto is still a planet :)

0 Replies

19 Views

Last post by Lady Fraktor
Fri Mar 31, 2023 4:34 am
Dr. Becky on JWST exoplanet spectral analysis

Last post by Gmetric « Thu Mar 30, 2023 10:55 pm

by Gmetric » Thu Mar 30, 2023 10:55 pm

0 Replies

20 Views

Last post by Gmetric
Thu Mar 30, 2023 10:55 pm
Space telescope detects water in a number of asteroids

Last post by Gmetric « Thu Mar 30, 2023 11:09 am
Replies: 3
by Lady Fraktor » Wed Mar 29, 2023 6:19 pm

3 Replies

72 Views

Last post by Gmetric
Thu Mar 30, 2023 11:09 am
Brightest gamma-ray burst ever observed reveals new mysteries of cosmic explosions

Last post by Lady Fraktor « Wed Mar 29, 2023 6:11 pm

by Lady Fraktor » Wed Mar 29, 2023 6:11 pm

0 Replies

37 Views

Last post by Lady Fraktor
Wed Mar 29, 2023 6:11 pm
Did the most distant galaxy “candidates” survive JWST’s ultimate test?

Last post by Michael131313 « Tue Mar 28, 2023 6:23 pm
Replies: 1
by SkyHiker » Tue Mar 28, 2023 2:30 pm

First post

Did the most distant galaxy “candidates” survive JWST’s ultimate test?

Last post

Most interesting. Thanks for the post.

1 Replies

52 Views

Last post by Michael131313
Tue Mar 28, 2023 6:23 pm
The Forgotten Mystery of Inertia

Last post by SkyHiker « Tue Mar 28, 2023 5:59 pm
Replies: 10
by SkyHiker » Thu Dec 15, 2022 10:46 am

First post

The Forgotten Mystery of Inertia

Last post

I learned a bit more about GR than when I posted the link. In the end I don't think there is a mystery at all, here is why. We can simplify the gyro...

10 Replies

240 Views

Last post by SkyHiker
Tue Mar 28, 2023 5:59 pm
JWT confirms giant planetary atmospheres vary widely

Last post by messier 111 « Tue Mar 28, 2023 12:58 am
Replies: 1
by helicon » Mon Mar 27, 2023 11:56 pm

1 Replies

30 Views

Last post by messier 111
Tue Mar 28, 2023 12:58 am
RNA base in asteroid samples suggests origins of life on Earth: Study

Last post by Gmetric « Sun Mar 26, 2023 1:00 pm
Replies: 2
by helicon » Sat Mar 25, 2023 4:36 pm

2 Replies

59 Views

Last post by Gmetric
Sun Mar 26, 2023 1:00 pm
PBS takes a deep dive into black holes and dark energy.

Last post by Gmetric « Wed Mar 22, 2023 9:50 pm

by Gmetric » Wed Mar 22, 2023 9:50 pm

Original threads

0 Replies

59 Views

Last post by Gmetric
Wed Mar 22, 2023 9:50 pm
Discovery of relativistic jets blowing bubbles in the central region of the Teacup galaxy

Last post by helicon « Tue Mar 21, 2023 3:14 pm

by helicon » Tue Mar 21, 2023 3:14 pm

0 Replies

49 Views

Last post by helicon
Tue Mar 21, 2023 3:14 pm
Are Space and Time real?

Last post by Lady Fraktor « Tue Mar 21, 2023 5:16 am
Replies: 6
by Gmetric » Fri Feb 24, 2023 3:44 am

First post

With PBS and Matt O'Dowd. This is the first part of what looks to be an interesting series.

Last post

A interesting series so far.

6 Replies

146 Views

Last post by Lady Fraktor
Tue Mar 21, 2023 5:16 am
Super Massive Stars in the early universe.

Last post by Lady Fraktor « Tue Mar 21, 2023 5:14 am
Replies: 2
by Gmetric » Fri Mar 17, 2023 1:00 pm

First post

Came across this little paper which models cold flow accretion as a mechanism for Pop III stars. But, not stars as we know them...

It's an...

Last post

Definitely a interesting approach to the problem, thank you for the link :)

2 Replies

90 Views

Last post by Lady Fraktor
Tue Mar 21, 2023 5:14 am
Terminator zones and habitability.

Last post by Gmetric « Fri Mar 17, 2023 3:10 pm

by Gmetric » Fri Mar 17, 2023 3:10 pm

0 Replies

50 Views

Last post by Gmetric
Fri Mar 17, 2023 3:10 pm
Ethan on why mass is important.

Last post by helicon « Thu Mar 16, 2023 1:23 pm
Replies: 4
by Gmetric » Tue Mar 14, 2023 10:56 pm

4 Replies

101 Views

Last post by helicon
Thu Mar 16, 2023 1:23 pm
Dangerous Moons

Last post by Lady Fraktor « Thu Mar 16, 2023 4:52 am
Replies: 1
by ThinkerX » Wed Mar 15, 2023 6:56 pm

First post

Earth might have gotten lucky.

I am reminded of Neptune/Triton in our Solar System.

The moon crashing into Earth may sound like an unrealistic...

Last post

I was just watching a program that discussed this along with how theory now thinks Mercury was past Mars orbit originally but lost most of its crust/...

1 Replies

64 Views

Last post by Lady Fraktor
Thu Mar 16, 2023 4:52 am
Study sheds more light on the diffuse radio emission from the galaxy cluster Abell 1213

Last post by Makuser « Tue Mar 14, 2023 5:30 pm
Replies: 1
by helicon » Tue Mar 14, 2023 3:12 pm

1 Replies

76 Views

Last post by Makuser
Tue Mar 14, 2023 5:30 pm
Two exoplanets orbiting a sun-like star discovered

Last post by ThinkerX « Sun Mar 12, 2023 9:34 pm
Replies: 1
by helicon » Sat Mar 11, 2023 7:18 pm

First post

A bit of Saturday reading...

Last post

A Neptune analog in an orbit comparable to that of Earth or maybe Mars...interesting...

1 Replies

75 Views

Last post by ThinkerX
Sun Mar 12, 2023 9:34 pm
Flatness of space vs spacetime

Last post by Gmetric « Fri Mar 10, 2023 12:44 am
Replies: 1
by SkyHiker » Thu Mar 09, 2023 7:03 pm

First post

I had been reading about the universe being flat as opposed to negatively curved, which I thought was the consensus for at least a while. That made...

Last post

Thanks for the links, your thoughts and clarification, Henk. Much appreciated.

1 Replies

79 Views

Last post by Gmetric
Fri Mar 10, 2023 12:44 am

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