Menu

Navigation

More options

Style variation

Contact us

Astronomy and Astrophysics Forum

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.

Filters

Graduate Did someone construct one to the universe in modern times?

Nov 28, 2003 · Replies 1 · Nov 28, 2003

Replies: 1

Views: 2K

Graduate The density of Mass relative to a critical mass

Nov 28, 2003 · Replies 1 · Nov 28, 2003

Replies: 1

Views: 4K

Graduate Is Gravity the Key to Maintaining the Universe's Balance?

May 13, 2003 · Replies 24 · Nov 28, 2003

Replies: 24

Views: 32K

Undergrad Ecliptic Plane's relation to Galactic Plane

Nov 26, 2003 · Replies 6 · Nov 28, 2003

Replies: 6

Views: 21K

Graduate Spectroscopic Observation of Anomalous Redshift in NGC 7603

Nov 14, 2003 · Replies 18 · Nov 28, 2003

Replies: 18

Views: 8K

Space Station Crew Discovers Dangerous Leak Between Pods - Apollo 13 Parallels

Nov 27, 2003 · Replies 2 · Nov 28, 2003

Replies: 2

Views: 3K

Graduate Could someone tell me what is the best school in cosmology and high energy?

Nov 26, 2003 · Replies 1 · Nov 27, 2003

Replies: 1

Views: 3K

Undergrad How do Oort Cloud objects become short-period comets?

Nov 25, 2003 · Replies 3 · Nov 27, 2003

Replies: 3

Views: 5K

Undergrad Expaning universe and colliding galaxies

Nov 19, 2003 · Replies 4 · Nov 27, 2003

Replies: 4

Views: 4K

Graduate CMB anisotropies and matter structures

Nov 23, 2003 · Replies 1 · Nov 26, 2003

Replies: 1

Views: 4K

What Will Be the Future of US Space Policy?

Nov 25, 2003 · Replies 1 · Nov 26, 2003

Replies: 1

Views: 2K

Where Can I Find Major Planetary Observatories?

Nov 24, 2003 · Replies 3 · Nov 25, 2003

Replies: 3

Views: 3K

Graduate Oscillating Unvierse Theory and the 2nd law of Thermodynamics

Nov 7, 2003 · Replies 12 · Nov 25, 2003

Replies: 12

Views: 7K

Undergrad Is the Ptolemaic System Still Relevant in Modern Astronomy?

Nov 23, 2003 · Replies 4 · Nov 25, 2003

Replies: 4

Views: 4K

Graduate How Can Galaxies Collide if the Universe is Expanding?

Oct 16, 2003 · Replies 8 · Nov 25, 2003

Replies: 8

Views: 3K

Stargazing Total Eclipse of Sol in Antarctica (24/11/03)

Nov 24, 2003 · Replies 1 · Nov 24, 2003

Replies: 1

Views: 3K

Upcoming Black Hole Physics Lectures in West Midlands?

Nov 24, 2003 · Replies 1 · Nov 24, 2003

Replies: 1

Views: 3K

Graduate What is the true nature of Space and the Universe?

Nov 21, 2003 · Replies 4 · Nov 24, 2003

Replies: 4

Views: 4K

Undergrad Black holes with nothing left to ingest.

Nov 20, 2003 · Replies 5 · Nov 24, 2003

Replies: 5

Views: 3K

Undergrad Collisions of large bodies starting at stationary positions

Nov 23, 2003 · Replies 3 · Nov 24, 2003

Replies: 3

Views: 3K

Undergrad Extrasolar planets discovered so far

Nov 20, 2003 · Replies 5 · Nov 24, 2003

Replies: 5

Views: 2K

High School Terrible newbie question - what should I see

Nov 19, 2003 · Replies 8 · Nov 24, 2003

Replies: 8

Views: 3K

Graduate The Origin of Venus's Retrograde Rotation: A Collisional Hypothesis

Nov 22, 2003 · Replies 5 · Nov 23, 2003

Replies: 5

Views: 3K

Graduate Gravitational waves and CMB polarization

Nov 22, 2003 · Replies 0 · Nov 22, 2003

Replies: 0

Views: 4K

High School How Much of Space is Habitable?

Oct 31, 2003 · Replies 5 · Nov 22, 2003

Replies: 5

Views: 3K

Graduate Discovering the Radius of a Planet with a Man, a Parachute, and a Satellite

Nov 21, 2003 · Replies 1 · Nov 22, 2003

Replies: 1

Views: 7K

Stargazing Building a Refractor Telescope - Tips & Guides

Nov 7, 2003 · Replies 8 · Nov 21, 2003

Replies: 8

Views: 10K

Graduate Do Black Holes Create New Universes?

Nov 20, 2003 · Replies 13 · Nov 21, 2003

Replies: 13

Views: 3K

Graduate Why is it easier to measure overall structure of Andromeda Galaxy than

Nov 20, 2003 · Replies 4 · Nov 21, 2003

Replies: 4

Views: 3K

High School Centre of the Universe: Finding Our Place in Space

Nov 20, 2003 · Replies 7 · Nov 21, 2003

Replies: 7

Views: 5K

Undergrad Can you measure a star's diameter directly?

Nov 9, 2003 · Replies 7 · Nov 21, 2003

Replies: 7

Views: 7K

Graduate Big Bang at every point in space?

Nov 19, 2003 · Replies 2 · Nov 20, 2003

Replies: 2

Views: 4K

Meet the closest unmaker dont ponder on it

Nov 19, 2003 · Replies 5 · Nov 20, 2003

Replies: 5

Views: 3K

Graduate Does Time Exist Without Physical Progress in the Space Time Unit Structure?

Nov 18, 2003 · Replies 1 · Nov 20, 2003

Replies: 1

Views: 3K

Remembering Galileo: The Little Spaceship That Could | PhysicsPost

Nov 19, 2003 · Replies 4 · Nov 20, 2003

Replies: 4

Views: 3K

Graduate Gravitational Slingshot: How does it Work & Analysis

Nov 10, 2003 · Replies 11 · Nov 19, 2003

Replies: 11

Views: 6K

Undergrad How Do Planetary Rings Form and Move?

Nov 4, 2003 · Replies 8 · Nov 19, 2003

Replies: 8

Views: 4K

Graduate Upper Limit of Energy for Gamma Ray Bursts?

Nov 8, 2003 · Replies 7 · Nov 19, 2003

Replies: 7

Views: 4K

Undergrad Sun light traveling to earth speed

Nov 19, 2003 · Replies 1 · Nov 19, 2003

Replies: 1

Views: 3K

Undergrad Does the Sun Move and What Forces Drive its Motion?

Nov 3, 2003 · Replies 8 · Nov 19, 2003

Replies: 8

Views: 4K

Graduate What are Key Questions About the Expansion of the Universe?

Nov 18, 2003 · Replies 4 · Nov 19, 2003

Replies: 4

Views: 4K

Undergrad Why Do Astronomers Relate Star Distance to Universe Age?

Nov 17, 2003 · Replies 2 · Nov 18, 2003

Replies: 2

Views: 4K

Undergrad Could Jupiter's Radiation Power Space Probes Instead of Damaging Them?

Nov 16, 2003 · Replies 6 · Nov 17, 2003

Replies: 6

Views: 6K

Undergrad Good read for basic background info

Nov 14, 2003 · Replies 2 · Nov 17, 2003

Replies: 2

Views: 3K

Mars Watch: Where is the Red Planet Now?

Aug 18, 2003 · Replies 18 · Nov 16, 2003

Replies: 18

Views: 6K

Graduate Questions About Event Horizon, Singularity & Schwarzchild Radius

Nov 16, 2003 · Replies 3 · Nov 16, 2003

Replies: 3

Views: 3K

High School Is Space-Time Governed by Universal Rules?

Nov 13, 2003 · Replies 4 · Nov 14, 2003

Replies: 4

Views: 3K

Graduate Is Our Galaxy Destined to Merge with the Great Attractor?

Nov 13, 2003 · Replies 3 · Nov 14, 2003

Replies: 3

Views: 3K

Undergrad Determining Age of Universe Using Hubbles Constant

Nov 13, 2003 · Replies 1 · Nov 13, 2003

Replies: 1

Views: 3K

Undergrad Dark matter discovery: Bail me out, guys?

Oct 27, 2003 · Replies 5 · Nov 12, 2003

Replies: 5

Views: 3K

Undergrad Distance of Star: Solve Parallax Equation for km & Light Years

Nov 12, 2003 · Replies 10 · Nov 12, 2003

Replies: 10

Views: 3K

High School Milky Way's Nearest Galaxy Being Consumed - New Discovery

Nov 6, 2003 · Replies 9 · Nov 11, 2003

Replies: 9

Views: 7K

Graduate Variable Speed of Light Cosmology: An Alternative to Inflation

Nov 10, 2003 · Replies 3 · Nov 10, 2003

Replies: 3

Views: 5K

Graduate Fig.5: Is the WMAP data analysis flawed?

Oct 25, 2003 · Replies 11 · Nov 9, 2003

Replies: 11

Views: 4K

Undergrad Sun more active than for a millennium: New Scientist

Nov 3, 2003 · Replies 11 · Nov 8, 2003

Replies: 11

Views: 5K

Graduate Is the Universe's Early Smoothness Questioned by Inflationary Theory?

Nov 7, 2003 · Replies 1 · Nov 7, 2003

Replies: 1

Views: 4K

In the event of a fullscale alien invasio

Nov 4, 2003 · Replies 4 · Nov 6, 2003

Replies: 4

Views: 3K

Undergrad The Roche Limit Formula: Discover the Solution to This Celestial Phenomenon

Nov 5, 2003 · Replies 2 · Nov 6, 2003

Replies: 2

Views: 4K

High School Major Flare Today: Sun Kicks Up Biggest Storm in Years

Oct 28, 2003 · Replies 14 · Nov 6, 2003

Replies: 14

Views: 5K

Graduate Static Universe: Evidence for a Non-Expanding Universe

Oct 8, 2003 · Replies 7 · Nov 5, 2003

Replies: 7

Views: 5K

Undergrad Anthropic Principle: Definition & Science

Nov 5, 2003 · Replies 4 · Nov 5, 2003

Replies: 4

Views: 3K

How they find weights of planets?

Oct 27, 2003 · Replies 6 · Nov 4, 2003

Replies: 6

Views: 4K

Graduate If there are 1000 GRBs per day, where is all that energy

Nov 1, 2003 · Replies 7 · Nov 4, 2003

Replies: 7

Views: 3K

Graduate Can the Universe Expand While Matter Converges Under Gravity?

Nov 4, 2003 · Replies 2 · Nov 4, 2003

Replies: 2

Views: 3K

Graduate Would the concept of empty space exist without depth perception?

Nov 2, 2003 · Replies 9 · Nov 4, 2003

Replies: 9

Views: 4K

Graduate Mystery of Type 1a Supernova: No Hydrogen in Spectrum

Oct 30, 2003 · Replies 9 · Nov 4, 2003

Replies: 9

Views: 8K

Undergrad What Causes Blue and Red Shift in Light?

Nov 2, 2003 · Replies 1 · Nov 3, 2003

Replies: 1

Views: 15K

Graduate Unearthing the Evidence: Examining the Strong Nuclear Force Constant

Oct 29, 2003 · Replies 6 · Nov 3, 2003

Replies: 6

Views: 4K

Graduate String Theory, Fate & Choas: Dualisms of Truth?

Nov 2, 2003 · Replies 2 · Nov 3, 2003

Replies: 2

Views: 3K

Undergrad Gravitational catapult and a spacecraft

Nov 3, 2003 · Replies 1 · Nov 3, 2003

Replies: 1

Views: 6K

Graduate What is the relationship between inflation and dark energy?

Nov 2, 2003 · Replies 2 · Nov 2, 2003

Replies: 2

Views: 3K

Why Do Some Black Holes Appear Pink?

Oct 29, 2003 · Replies 4 · Nov 1, 2003

Replies: 4

Views: 6K

Undergrad Does the Earth's Core Wobble Within the Planet Due to the Moon's Orbit?

Sep 22, 2003 · Replies 27 · Oct 31, 2003

Replies: 27

Views: 9K

Graduate What Are the Implications of Relativistic Redshift on Our Understanding of Time?

Oct 30, 2003 · Replies 5 · Oct 30, 2003

Replies: 5

Views: 3K

Is Pi the Secret to Understanding Our Finite Universe?

Oct 9, 2003 · Replies 8 · Oct 30, 2003

Replies: 8

Views: 5K

High School Effects from Oct 28th CME's wont hit Earth for a couple days?

Oct 28, 2003 · Replies 7 · Oct 30, 2003

Replies: 7

Views: 4K

High School How many moons does Jupiter have and how were they discovered?

Oct 20, 2003 · Replies 5 · Oct 30, 2003

Replies: 5

Views: 5K

High School Would Earth's Inhabitants Notice if It Suddenly Stopped Moving?

Sep 23, 2003 · Replies 11 · Oct 29, 2003

Replies: 11

Views: 5K

High School What would happen if an astroid did hit earth

Oct 28, 2003 · Replies 2 · Oct 29, 2003

Replies: 2

Views: 3K

Graduate Is Space/Matter a Unified Continuum in Cosmology?

Oct 27, 2003 · Replies 4 · Oct 29, 2003

Replies: 4

Views: 4K

Graduate How Do Gravity Waves Form from Space-Time Oscillations?

Oct 28, 2003 · Replies 4 · Oct 29, 2003

Replies: 4

Views: 3K

Undergrad Black Hole Cannibalism: How Do Black Holes Devour Their Own 'Offspring'?

Oct 26, 2003 · Replies 11 · Oct 28, 2003

Replies: 11

Views: 4K

Graduate Dark matter detected? (1 Oct. preprint)

Oct 1, 2003 · Replies 14 · Oct 28, 2003

Replies: 14

Views: 3K

Undergrad What Are the Potential Consequences of Not Finding Gravity Waves?

Oct 20, 2003 · Replies 13 · Oct 27, 2003

Replies: 13

Views: 5K

Long-lost near-Earth asteroid spotted: New Scientist

Oct 17, 2003 · Replies 6 · Oct 25, 2003

Replies: 6

Views: 4K

Mystery Spot on Jupiter Baffles Astronomers

Oct 24, 2003 · Replies 5 · Oct 24, 2003

Replies: 5

Views: 4K

Undergrad Question About Elliptical Orbits

Oct 23, 2003 · Replies 11 · Oct 24, 2003

Replies: 11

Views: 4K

Graduate Can Gravitational Differential Explain Celestial Rotational Energies?

Oct 17, 2003 · Replies 4 · Oct 24, 2003

Replies: 4

Views: 4K

Undergrad Gamma Rays Origin: NASA, UMich, DOE Labs Confirm Death of Massive Star

Oct 18, 2003 · Replies 3 · Oct 23, 2003

Replies: 3

Views: 5K

Undergrad The Fragile Earth: Our Existence Hangs on a Tiny Orbital Change

Oct 20, 2003 · Replies 25 · Oct 21, 2003

Replies: 25

Views: 4K

Graduate Can a black hole hold an infinte ammount of mass

Oct 20, 2003 · Replies 4 · Oct 21, 2003

Replies: 4

Views: 3K

Graduate If a body is heated its gravity will increase

Oct 16, 2003 · Replies 11 · Oct 21, 2003

Replies: 11

Views: 4K

Undergrad Explaining the Mystery of Star Separation: A Scientific Inquiry

Oct 12, 2003 · Replies 25 · Oct 20, 2003

Replies: 25

Views: 8K

China's Historic First Human Space Mission: A New Space Race?

Oct 15, 2003 · Replies 54 · Oct 20, 2003

2

Replies: 54

Views: 7K

Graduate Did Primordial Black Holes evaporate?

Sep 24, 2003 · Replies 18 · Oct 19, 2003

Replies: 18

Views: 7K

Undergrad Why do Uranus and Pluto have retrograde rotations?

Oct 17, 2003 · Replies 19 · Oct 19, 2003

Replies: 19

Views: 5K

Graduate Dark Matter as primordial Black Holes in extended Halos

Oct 16, 2003 · Replies 7 · Oct 19, 2003

Replies: 7

Views: 5K

Graduate The Not So Ultimate Theory of Black Holes that are caused by BEC

Oct 19, 2003 · Replies 1 · Oct 19, 2003

Replies: 1

Views: 2K

High School Why does the Earth rotate as it orbits the sun?

Oct 15, 2003 · Replies 6 · Oct 18, 2003

Replies: 6

Views: 5K

China to launch a man into space on Oct 10th?

Aug 15, 2003 · Replies 10 · Oct 17, 2003

Replies: 10

Views: 5K

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.

Top