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Astronomy, Astrophysics, Cosmology Forum

Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.

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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

Graduate Hologramatic universe and the philosophy of nonduality

Nov 16, 2003 · Replies 1 · Nov 17, 2003

Replies: 1

Views: 7K

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: 7K

Graduate Questions About Event Horizon, Singularity & Schwarzchild Radius

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

Replies: 3

Views: 3K

Graduate Will anyone ever accept that the universe is a three dimensional net?

Nov 13, 2003 · Replies 1 · Nov 15, 2003

Replies: 1

Views: 3K

NOVA: The Elegant Universe - Released on Internet

Nov 14, 2003 · Replies 1 · Nov 14, 2003

Replies: 1

Views: 6K

High School Is Space-Time Governed by Universal Rules?

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

Replies: 4

Views: 3K

Undergrad Looking for latest info on a few topics

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

Replies: 2

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

Graduate Is Human Behavior a Microcosm of Cosmic Forces?

Nov 10, 2003 · Replies 2 · Nov 11, 2003

Replies: 2

Views: 5K

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

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

Replies: 9

Views: 8K

Graduate Variable Speed of Light Cosmology: An Alternative to Inflation

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

Replies: 3

Views: 5K

Graduate Is the Universe Contingent and Does it Prove the Existence of God?

Oct 7, 2003 · Replies 25 · Nov 9, 2003

Replies: 25

Views: 20K

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

Graduate Precision of The Big Bang Theory with John Gibbin's "In the Beginning"

Sep 11, 2003 · Replies 1 · Nov 7, 2003

Replies: 1

Views: 3K

Graduate Explain Multiple Histories & Imaginary Time - Stephen Hawking

Mar 20, 2003 · Replies 11 · Nov 6, 2003

Replies: 11

Views: 10K

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: 4K

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

Graduate Origin of Universe: Alternative Theory

Nov 3, 2003 · Replies 1 · Nov 4, 2003

Replies: 1

Views: 3K

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: 7K

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: 10K

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: 4K

High School Maths and the infinite universe.

Oct 27, 2003 · Replies 7 · Oct 28, 2003

Replies: 7

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

Graduate Can A Black Hole End The Universe?

Oct 23, 2003 · Replies 8 · Oct 26, 2003

Replies: 8

Views: 11K

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: 5K

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: 5K

Graduate Can a black hole hold an infinte ammount of mass

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

Replies: 4

Views: 4K

Graduate If a body is heated its gravity will increase

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

Replies: 11

Views: 4K

Graduate A universe infinite in size and matter

Oct 19, 2003 · Replies 23 · Oct 20, 2003

Replies: 23

Views: 4K

Undergrad Explaining the Mystery of Star Separation: A Scientific Inquiry

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

Replies: 25

Views: 9K

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

High School Is Jupiter's Giant Red Spot Caused by the Coriolis Effect?

Oct 10, 2003 · Replies 14 · Oct 17, 2003

Replies: 14

Views: 6K

Undergrad Counting Supernovae: Estimating the Frequency of Stellar Explosions

Oct 11, 2003 · Replies 14 · Oct 17, 2003

Replies: 14

Views: 4K

High School Discovering Gravity: Understanding the Equation mv^2/r=GmM/r^2"

Oct 17, 2003 · Replies 2 · Oct 17, 2003

Replies: 2

Views: 6K

High School Does Planet Weight Depend on Speed and Gravity?

Oct 13, 2003 · Replies 11 · Oct 17, 2003

Replies: 11

Views: 5K

High School How Do Planets Influence Each Other?

Oct 15, 2003 · Replies 3 · Oct 17, 2003

Replies: 3

Views: 9K

Graduate Is there a solution to the Precession-Time Paradox?

Oct 8, 2003 · Replies 7 · Oct 17, 2003

Replies: 7

Views: 5K

Undergrad How does a boomerang behave in empty space and gravity?

Oct 15, 2003 · Replies 6 · Oct 16, 2003

Replies: 6

Views: 4K

Graduate What Existed Before the Big Bang?

Oct 15, 2003 · Replies 3 · Oct 15, 2003

Replies: 3

Views: 3K

Graduate Microlensing might detect planets as well as MACHOs

Oct 13, 2003 · Replies 1 · Oct 15, 2003

Replies: 1

Views: 3K

Undergrad Unanswered Question: White Dwarfs and Black Holes

Sep 21, 2003 · Replies 31 · Oct 15, 2003

2

Replies: 31

Views: 8K

High School Eight Grader's Question on Deflecting Asteroids

Oct 14, 2003 · Replies 1 · Oct 15, 2003

Replies: 1

Views: 3K

High School What Determines the Gravity of Planets?

Oct 15, 2003 · Replies 3 · Oct 15, 2003

Replies: 3

Views: 7K

What are some lesser-known space programs around the world?

Oct 3, 2003 · Replies 4 · Oct 15, 2003

Replies: 4

Views: 4K

Star '37 Gem' called most likely home to aliens: CNN

Oct 9, 2003 · Replies 15 · Oct 14, 2003

Replies: 15

Views: 4K

Graduate Why Do We Only Experience Four Dimensions?

Oct 9, 2003 · Replies 3 · Oct 14, 2003

Replies: 3

Views: 3K

Witnessing the Moon's Rapid Set - A Fall Foliage Experiment

Oct 13, 2003 · Replies 1 · Oct 13, 2003

Replies: 1

Views: 3K

Graduate Astronomy, Cosmology, and physics of old

Oct 6, 2003 · Replies 16 · Oct 13, 2003

Replies: 16

Views: 5K

Graduate Conceptional Space/Matter Cosmology,PART2

Oct 11, 2003 · Replies 6 · Oct 12, 2003

Replies: 6

Views: 3K

Graduate From the begining there was nothing and in the end

Oct 11, 2003 · Replies 3 · Oct 12, 2003

Replies: 3

Views: 3K

Undergrad Does Titan Have Oily Oceans?

Oct 7, 2003 · Replies 3 · Oct 12, 2003

Replies: 3

Views: 3K

Graduate Is the Universe Expanding in All Directions at the Same Rate?

Oct 7, 2003 · Replies 10 · Oct 12, 2003

Replies: 10

Views: 6K

Undergrad Orbits: Elliptical vs. Parabolic

Oct 7, 2003 · Replies 12 · Oct 11, 2003

Replies: 12

Views: 12K

Graduate Is the Universe Shaped Like a Dodecahedron?

Oct 9, 2003 · Replies 1 · Oct 11, 2003

Replies: 1

Views: 4K

Graduate How does gravitational lensing support the expansion of space?

Oct 7, 2003 · Replies 8 · Oct 11, 2003

Replies: 8

Views: 4K

Undergrad How Do Contact Binary Stars Coexist Without Destruction?

Jun 9, 2003 · Replies 19 · Oct 11, 2003

Replies: 19

Views: 10K

New Photos of 'Astounding' Mars: space.com

Oct 8, 2003 · Replies 6 · Oct 10, 2003

Replies: 6

Views: 5K

Graduate Conceptional space/time cosmology

Oct 5, 2003 · Replies 6 · Oct 9, 2003

Replies: 6

Views: 3K

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.

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