Astronomy/Astrophysics

19 Apr 2025 15:22

what telescope are you using?
btw love your work

Astronomy/Astrophysics

19 Apr 2025 03:41

https://youtu.be/qJZ1Ez28C-A?si=13bfobNp042UR2Xv

Astronomy/Astrophysics

13 Apr 2025 19:56

The entropy change, i suppose

Astronomy/Astrophysics

13 Apr 2025 18:49

What are we measuring when we measure time?

Astronomy/Astrophysics

13 Apr 2025 12:26

What was the focal length aperture and ISO for one light

Astronomy/Astrophysics

13 Apr 2025 08:23

will do some experiment on how to know the distance of stars and moons from basics!!!

Astronomy/Astrophysics

12 Apr 2025 17:18

What's your timezone

Astronomy/Astrophysics

12 Apr 2025 16:03

I turned anonymity and the link broke.
Had to turn it off.
Try now.

Astronomy/Astrophysics

12 Apr 2025 14:53

Burn Bright:
The Secrets Behind Starshine
13th Apr • 11 am
Please use the link to RSVP https://calendar.app.google/EMQLPpFy8qXACYHD6

Astronomy/Astrophysics

12 Apr 2025 13:34

I think it's a good idea

Astronomy/Astrophysics

12 Apr 2025 13:27

no i meant in between 11am to 4pm?

Astronomy/Astrophysics

12 Apr 2025 05:27

Which two, three branches

Astronomy/Astrophysics

12 Apr 2025 01:08

Hello Astronomers and all physics fans, I'm new here
Looking for intellectual chat on physics with curious minds

Astronomy/Astrophysics

11 Apr 2025 23:49

New members please go through the rules. You can see the rules by typing /rules. Try to have productive discussions here. Please check the guidelines for Asking Good Questions

Astronomy/Astrophysics

11 Apr 2025 18:44

yeah if it's going to be a series of sessions...otherwise any cool but hardish topic is good.

Astronomy/Astrophysics

19 Apr 2025 13:53

Astrophotographer and hobby astronomer, but without having studied or working in the field.

Astronomy/Astrophysics

18 Apr 2025 18:53

Astrophysical Journal in the news
Astronomers confirm the existence of a lone black hole

A team of astronomers at the Space Telescope Science Institute, working with one colleague from the University of St Andrews' Center for Exoplanet Science and another from the European Southern Observatory, has confirmed the existence of a lone black hole. In their paper published in The Astrophysical Journal, the group describes how they studied newer data regarding an object they had spotted several years ago to confirm its identity.

Astronomy/Astrophysics

13 Apr 2025 19:56

You are measuring the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom

Astronomy/Astrophysics

13 Apr 2025 15:33

it was at 250mm, f6.3 at 800 iso

Astronomy/Astrophysics

13 Apr 2025 09:59

Messier 42
Great nebula in orion

The Orion nebula, located approximately 1344 light years away in the orions sword, is one of the brightest nebulae visible in the night sky.

It is the closest region of massive star formation to Earth. It is estimated to be 24 light years across and has the mass of 2000 suns.

It is a very dusty region of space with lots of gas and new born stars.

Around 4 hours of data from bortle 4
Equipment:
Nikon Z50
Nikkor 50-250mm f4.5-6.3
Explore scientific iexos-100-2pmc tracking mount

Astronomy/Astrophysics

12 Apr 2025 19:28

Watch the pink moon live streamed: https://www.youtube.com/live/ECa71AoifHI?si=6mtqKORT4-8sauXI

Astronomy/Astrophysics

12 Apr 2025 16:52

but why is it showing 5:30 am to 6:30am

Astronomy/Astrophysics

12 Apr 2025 16:00

It's showing an error.

Astronomy/Astrophysics

12 Apr 2025 13:51

Let’s see what others say

Astronomy/Astrophysics

12 Apr 2025 13:33

Hey can we do meetings and disscus about astronomy and astrophysics

Astronomy/Astrophysics

12 Apr 2025 06:03

Quantum physics and astronomy

Astronomy/Astrophysics

12 Apr 2025 01:57

Not sure maybe smtg that interrelates the astronomy branches?

Astronomy/Astrophysics

12 Apr 2025 00:03

Light travels at the "speed of light" simply because it has no matter. Otherwise, it would have to have infinite energy. Therefore, "materializing" light should be impossible.

Astronomy/Astrophysics

11 Apr 2025 19:34

2025 April 11

The ISS Meets Venus
Image Credit & Copyright: A.J. Smadi

Made with a telescope shaded from bright sunlight by an umbrella, on April 5 a well-planned video captured a crescent Venus shining in clear daytime skies from Shoreline, Washington, USA at 11:57AM Pacific Time. It also caught the International Space Station in this single video frame. In close conjunction with the bright planet, the faint outline of the orbital outpost seen at a range of about 400 kilometers appears to be similar in size to the slender planetary crescent. Of course the ISS is much smaller than Venus. Now appearing as planet Earth's brilliant morning star and climbing above the eastern horizon in predawn skies, inner planet Venus was nearly 45 million kilometers from Shoreline.

Astronomy/Astrophysics

11 Apr 2025 18:19

basics of astrophysics