Astronomy and Astrophysics Forum

Post thread
Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
  • Sticky
Our Beautiful Universe - Photos and Videos
48
Replies
2K
Views
258K
  • Sticky
Stargazing How Can You Improve Your Amateur Solar Imaging Techniques?
7
Replies
311
Views
52K
  • Sticky
Insights Planning to buy a first telescope? - Comments
4
Replies
161
Views
134K
  • Sticky
Astronomy and Cosmology FAQ List
Replies
3
Views
15K
B Asteroid 2024 YR4 has a 1% risk of a multi-megaton impact in 2032 (now ruled out)
Replies
34
Views
6K
Stargazing Partial Solar Eclipse, From Southern New Zealand
Replies
0
Views
62
B Star like object travels in a zigzagging pattern relative to other stars
Replies
47
Views
7K
B Venus and Jupiter Conjunction
Replies
4
Views
301
Stargazing Solar Activity and Space Weather Update thread
9
Replies
432
Views
52K
I Potential biosignature found in Mars rock
Replies
13
Views
288
B 3I/ATLAS, Interstellar Comet
Replies
8
Views
308
Does it make sense to build new radio telescopes?
Replies
46
Views
580
A Could gamma-ray bursts have an intragalactic origin?
Replies
29
Views
339
Stargazing Orange lines on Aladin lite
Replies
3
Views
152
A Why do both poles of a radio pulsar emit radio waves?
Replies
7
Views
217
I Could fast radio bursts be alien radar signals?
Replies
9
Views
220
B Looking for a list of astronomy collaborations
Replies
2
Views
2K
B Does Time Pass at Different Rates on Other Planets?
Replies
19
Views
330
A Self-gravitating systems and MOND
Replies
11
Views
273
The James Webb Space Telescope
11
Replies
533
Views
52K
I How to explain the strange pulsar in the Crab Nebula?
Replies
4
Views
267
I Why are continuously emitting radio pulsars not detected?
Replies
30
Views
464
I Time interval terminology
Replies
6
Views
244
A Charge to mass ratio of a photon
Replies
15
Views
1K
B Simulating the Universe's First Stars - The Population III Stars
Replies
5
Views
211
B Feasibility of Sending a Radio Signal Detectable from a Neighboring Star
Replies
5
Views
225
B Interstellar asteroids
Replies
22
Views
423
I Big bang balloon?
Replies
5
Views
248
I Sun gravitational lensing forces
Replies
11
Views
1K
B Where can I find easy-to-understand GAIA exoplanet data?
Replies
4
Views
2K
I Large Synoptic Survey Telescope -> Vera C. Rubin Observatory
Replies
13
Views
4K
B Sun's peak wavelengths and chlorophyll's green colour
Replies
27
Views
2K
A Understanding the Gravitational Redshift Caused by a Black Hole
Replies
9
Views
994
B How well do we understand the formation of population III stars?
Replies
7
Views
2K
I Questions on Expansion of the Universe and Newtonian Physics
Replies
7
Views
1K
B Strange spiral structure in Oort Cloud, outer Solar System
Replies
2
Views
1K
I How 'Messy' are Fusion Reaction Chains in Stars?
Replies
6
Views
4K
B Strongest hints yet of biological activity outside the solar system
Replies
21
Views
3K
I Help with my Polar Aligning Star Tracker please
Replies
18
Views
3K
I IRAF 2025?
Replies
3
Views
1K
I If We Crack the Neutron Star Equation of State, How Will It Change Our Daily Lives?
Replies
12
Views
2K
B Colliding Gas Cloud to form a Star
Replies
3
Views
1K
I Gravitational wave effects on different materials
Replies
4
Views
1K
Deep sky picture
Replies
8
Views
2K
B What has space exploration done for me as an individual?
Replies
16
Views
1K
Stargazing Small angle lunar haloes
Replies
5
Views
2K
A Did scientists just find that the Universe has finite angular momentum?
Replies
12
Views
3K
B Confusion regarding black hole spin
Replies
40
Views
3K
I Mass Loss on an HR diagram
Replies
1
Views
1K
I Magnitude where the Pale Dot is blue?
Replies
1
Views
936
A Classifying Milky Way planets by what they´re bound to and originate from
Replies
3
Views
982
I Galaxy GNZ11 33 billion light-years away
Replies
7
Views
2K
B First ever recorded planetary engulfment
Replies
3
Views
2K
B Does Sun cross planes of all binary stars?
Replies
14
Views
2K
Stargazing Q: Meridian flip
Replies
6
Views
2K
B What is dark matter?
Replies
10
Views
2K
Stargazing Castor, Pollux, Mars and the Moon
Replies
0
Views
1K
B Gaia Telescope Shut Down
Replies
5
Views
1K
I Why Do Nebulae only have Hydrogen, Oxygen and Sulfur?
Replies
4
Views
1K
I Confused about Stonyhurst Grid and jHelioViewer
Replies
17
Views
2K
I How can the Universe be infinite?
Replies
6
Views
2K
I Speediest Exoplanet System
Replies
11
Views
3K
B Black hole equivalence
Replies
20
Views
2K
B CNO Cycle
Replies
3
Views
2K
I Fastest space travel
Replies
8
Views
2K
Measuring the Solar System and Universe
Replies
2
Views
1K
B Possible explanations for meteor like observations?
Replies
12
Views
3K
I The initial density of an object and its compression into a black hole
Replies
17
Views
4K
B I Need Help on Understanding Some Basic Astrophysics / Sand Clock Universe
Replies
5
Views
2K
I Would discovery of a galaxy without dark matter disprove MOND?
Replies
13
Views
3K
I Cosmic ray origins
Replies
1
Views
2K
Stargazing A new planet?
Replies
1
Views
2K
Stargazing Merger of two black holes (video)
Replies
7
Views
3K
B Brightness of different layers of the Sun
Replies
29
Views
2K
A Understanding NOAA and Naval Observatory's Solar Calculations
Replies
16
Views
4K
B Atmospheric refraction and "rainbow"
Replies
27
Views
2K
I How big a lunar radio telescope to detect Earth-like signals?
Replies
19
Views
2K
B Question: Orbital mechanics of a binary star system
Replies
5
Views
2K
Stargazing Meteorite crash recorded on video in Canada
Replies
10
Views
2K
B More scope refurbishments or start new?
Replies
7
Views
2K
Stargazing Mars Occultation
Replies
3
Views
2K
I Nature paper on Moon's initial evolution - Tidally driven remelting
Replies
1
Views
2K
I The Heavier Elements: A Question About Their Abundance
Replies
28
Views
3K
I Moon phase ruins my Stargazing!
Replies
6
Views
2K
B Help w/ repairing/refurbishing an equatorial mount
Replies
11
Views
2K
B Does my theory about black holes make sense ?
Replies
5
Views
2K
I Expansion of a star to become a red giant
Replies
16
Views
3K
B Considering a budget observatory
Replies
10
Views
2K
I How to graph Earth's path?
Replies
10
Views
2K
I Possibility of multiple planets sharing the same orbit?
Replies
14
Views
2K
B What If We Could See the Past by Placing a Mirror on the Sun?
Replies
13
Views
2K
B Popular physics - The Nebra disk
Replies
5
Views
3K
B Can a thunderstorm affect a satellite in low earth orbit?
Replies
3
Views
2K
I Is this the correct representation for showing the direction of a star on CMD?
Replies
5
Views
2K
A Where to find black hole datasets
Replies
11
Views
2K
A XSPEC Composite Model Partial Flux Calculations
Replies
0
Views
2K
A Spectral Data Availibility
Replies
5
Views
3K
B Can nature do this in the night sky?
Replies
5
Views
2K
Stargazing Is this a meteorite?
Replies
8
Views
2K
I Does light bend around black holes?
Replies
49
Views
5K
B Predicting frequency of Earthlike planets and systems
Replies
11
Views
3K
B Neutron star 4U 1820-30 spins at 716 revolutions per second
Replies
0
Views
2K
I New Developments In The Search For Planet X
Replies
2
Views
3K
I How feasible is home radio astronomy?
2
Replies
53
Views
9K

Astronomy

Astronomy is the scientific study of celestial objects and phenomena beyond Earth's atmosphere. It encompasses the observation and analysis of stars, planets, galaxies, and other celestial bodies, as well as the broader exploration of the universe's origins, structure, and evolution.

Astronomers employ a variety of tools, including telescopes, satellites, and advanced instrumentation, to gather data and uncover the mysteries of the cosmos. The field addresses questions about the nature of dark matter, the expansion of the universe, and the potential for extraterrestrial life.

Astronomy not only contributes to our understanding of the cosmos but also inspires wonder and curiosity about the vastness and complexity of the universe we inhabit.

Hot Threads

Recent Insights

Back
Top