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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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Graduate Universe Is Infinite: Mathematical Proofs

Jan 15, 2004 · Replies 37 · Feb 2, 2004

2

Replies: 37

Views: 8K

Learn Astronomy for Free: Tips & Ideas

Jan 28, 2004 · Replies 11 · Jan 31, 2004

Replies: 11

Views: 3K

Graduate Can Newton's Gravitational Law and Hooke's Law be Unified?

Jan 15, 2004 · Replies 7 · Jan 31, 2004

Replies: 7

Views: 3K

What Happened to Spirit Rover on Mars?

Jan 22, 2004 · Replies 32 · Jan 31, 2004

2

Replies: 32

Views: 6K

Graduate Drake Equation: Solving the Probability of Extraterrestrial Civilizations

Jan 29, 2004 · Replies 1 · Jan 30, 2004

Replies: 1

Views: 4K

Undergrad Definition of Life: Beyond Organic Matter

Jan 30, 2004 · Replies 1 · Jan 30, 2004

Replies: 1

Views: 3K

Graduate This is kind of WAY in the future but nevertheless:

Jan 27, 2004 · Replies 5 · Jan 30, 2004

Replies: 5

Views: 2K

Graduate Atheistic explanations for the Big Bang?

Jan 28, 2004 · Replies 3 · Jan 29, 2004

Replies: 3

Views: 2K

Graduate What Are the Mysteries Surrounding Super Clusters in Our Universe?

Jan 25, 2004 · Replies 3 · Jan 29, 2004

Replies: 3

Views: 4K

Graduate Is the Universe a Meaningful Whole or Just a Collection of Entities?

Jan 29, 2004 · Replies 1 · Jan 29, 2004

Replies: 1

Views: 3K

Graduate Jovian System has better colony sites than moon&mars

Jan 21, 2004 · Replies 60 · Jan 28, 2004

3

Replies: 60

Views: 11K

High School What is a planet's order called?

Jan 20, 2004 · Replies 1 · Jan 28, 2004

Replies: 1

Views: 3K

Graduate Why do you refuse to consider new evidence and advancements in science?

Jan 27, 2004 · Replies 2 · Jan 27, 2004

Replies: 2

Views: 3K

Undergrad How big is a BLACK HOLE? Can it be calculated ?

Jan 25, 2004 · Replies 5 · Jan 26, 2004

Replies: 5

Views: 7K

Graduate For those about to go Surfing tomorrow?Big-Bang new perspective?

Jan 19, 2004 · Replies 3 · Jan 25, 2004

Replies: 3

Views: 4K

Is there water on Mars? Check out these amazing pics!

Jan 24, 2004 · Replies 4 · Jan 25, 2004

Replies: 4

Views: 4K

Graduate Superluminal spacecraft: impossible?

Jan 23, 2004 · Replies 25 · Jan 25, 2004

Replies: 25

Views: 4K

A great day for space exploration

Jan 4, 2004 · Replies 24 · Jan 24, 2004

Replies: 24

Views: 5K

Graduate Does the Sun's Gravitational Effect Influence the Calculation of Star Distances?

Jan 24, 2004 · Replies 5 · Jan 24, 2004

Replies: 5

Views: 3K

Galileo mission fact sheets (in case yr interested)

Jan 24, 2004 · Replies 3 · Jan 24, 2004

Replies: 3

Views: 4K

High School Is Bush's Moon-Mars Initiative a New Space Frontier?

Jan 15, 2004 · Replies 34 · Jan 23, 2004

2

Replies: 34

Views: 7K

Undergrad What is the Purpose of the Cosmic Ray Observatory?

Jan 13, 2004 · Replies 4 · Jan 23, 2004

Replies: 4

Views: 4K

Graduate Has the Origin Point of the Big Bang Been Approximated?

Jan 22, 2004 · Replies 23 · Jan 23, 2004

Replies: 23

Views: 4K

Graduate What Are the Best Strategies for Intergalactic Communication?

Jan 20, 2004 · Replies 14 · Jan 23, 2004

Replies: 14

Views: 3K

Graduate Uncovering the Truth About Dark Energy: XMM-Newton's Surprising Findings

Jan 22, 2004 · Replies 2 · Jan 23, 2004

Replies: 2

Views: 2K

Undergrad Expanding people in an expanding universe?

Jan 17, 2004 · Replies 7 · Jan 22, 2004

Replies: 7

Views: 8K

Daft question but it's getting late.

Jan 21, 2004 · Replies 4 · Jan 22, 2004

Replies: 4

Views: 3K

High School Planet or Star: How to Tell the Difference When Stargazing?

Jan 20, 2004 · Replies 11 · Jan 22, 2004

Replies: 11

Views: 8K

Undergrad Mass of a Planet: Find it Quickly!

Jan 21, 2004 · Replies 22 · Jan 21, 2004

Replies: 22

Views: 10K

High School Greetings Physics Wizzes: Find New Moon Apex Time Tonight

Jan 21, 2004 · Replies 6 · Jan 21, 2004

Replies: 6

Views: 3K

Graduate How Does the Solar Muon Flux Explain the High Temperature of the Corona?

Jan 10, 2004 · Replies 6 · Jan 21, 2004

Replies: 6

Views: 4K

How can we afford space tourism without discounts and referrals?

Jan 15, 2004 · Replies 6 · Jan 20, 2004

Replies: 6

Views: 3K

Graduate How much of the Milky Way is within the Galactic Habitable Zone?

Jan 16, 2004 · Replies 2 · Jan 20, 2004

Replies: 2

Views: 4K

Undergrad What does the sun look like from Mars?

Jan 19, 2004 · Replies 9 · Jan 20, 2004

Replies: 9

Views: 7K

Graduate Galaxy string challenges Models? (News link)

Jan 19, 2004 · Replies 2 · Jan 20, 2004

Replies: 2

Views: 3K

First victim of moon base/Mars mission?

Jan 16, 2004 · Replies 24 · Jan 19, 2004

Replies: 24

Views: 5K

Undergrad LUNAR LASER RANGING Experiment Uncovers Moon's Geology

Jan 19, 2004 · Replies 1 · Jan 19, 2004

Replies: 1

Views: 2K

High School How Does Hubble Take Pictures of the Universe?

Jan 18, 2004 · Replies 5 · Jan 19, 2004

Replies: 5

Views: 2K

Graduate The bathe in a good health space time

Dec 15, 2003 · Replies 2 · Jan 18, 2004

Replies: 2

Views: 2K

Spirit Landed Successfully, sending pictures

Jan 4, 2004 · Replies 7 · Jan 17, 2004

Replies: 7

Views: 3K

How do you find which direcion you are travelling in space?

Jan 13, 2004 · Replies 9 · Jan 16, 2004

Replies: 9

Views: 3K

When will the first Space Wars happen?

Jan 9, 2004 · Replies 17 · Jan 16, 2004

Replies: 17

Views: 4K

Graduate What is the significance of superheated gas in the cosmos?

Nov 30, 2003 · Replies 22 · Jan 16, 2004

Replies: 22

Views: 7K

Graduate Significance of equal Sun and Moon apparent sizes?

Jan 9, 2004 · Replies 5 · Jan 16, 2004

Replies: 5

Views: 5K

Stargazing Revolutionizing Telescope Technology: The Potential of Analog Nano-Tech Mirrors

Jan 15, 2004 · Replies 1 · Jan 16, 2004

Replies: 1

Views: 3K

Graduate Israeli technology enables images beamed from Mars

Jan 13, 2004 · Replies 5 · Jan 15, 2004

Replies: 5

Views: 3K

Discover the Power of Solar Energy: Science, Facts and Resources

Jan 10, 2004 · Replies 1 · Jan 15, 2004

Replies: 1

Views: 2K

Graduate The surface of Mars, the loss it’s of atmosphere and the fate of earth.

Jan 14, 2004 · Replies 1 · Jan 14, 2004

Replies: 1

Views: 5K

Graduate GEMS - a rich trove of information about galaxy evolution

Jan 13, 2004 · Replies 5 · Jan 13, 2004

Replies: 5

Views: 3K

Graduate How do scientists create a map of the sky using cosmic background radiation?

Jan 12, 2004 · Replies 3 · Jan 13, 2004

Replies: 3

Views: 3K

Undergrad Is it possible for an object to orbit a stationary object?

Jan 10, 2004 · Replies 11 · Jan 12, 2004

Replies: 11

Views: 4K

Graduate Lensed quasar observations support dark matter models

Dec 18, 2003 · Replies 11 · Jan 12, 2004

Replies: 11

Views: 5K

Undergrad Space Station: Cost vs Value - Science Channel Review

Dec 24, 2003 · Replies 12 · Jan 10, 2004

Replies: 12

Views: 3K

Graduate Are there regions inside the Universe where the Laws of Physics vary?

Jan 10, 2004 · Replies 1 · Jan 10, 2004

Replies: 1

Views: 3K

Graduate The production of a black hole using television sets

Jan 9, 2004 · Replies 6 · Jan 10, 2004

Replies: 6

Views: 3K

Colliding Galaxies; Hot Gas; New News

Jan 10, 2004 · Replies 1 · Jan 10, 2004

Replies: 1

Views: 2K

Undergrad What is an Active Galactic Nucleus and Why is it Important?

Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Views: 4K

Graduate Will Gravitational Wave Detectors Challenge Current Theories on Binary Stars?

Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Views: 3K

Graduate Is the Universe Analog or Digital?

Jan 7, 2004 · Replies 25 · Jan 9, 2004

Replies: 25

Views: 7K

High School Orbit Deformation: Mars & Jupiter

Jan 8, 2004 · Replies 6 · Jan 9, 2004

Replies: 6

Views: 3K

Graduate Can black holes be used for time travel?

Jan 4, 2004 · Replies 13 · Jan 9, 2004

Replies: 13

Views: 6K

Undergrad Is the Universe Really Expanding, and Where is it Heading?

Jan 8, 2004 · Replies 2 · Jan 8, 2004

Replies: 2

Views: 3K

Graduate Black Holes & Time: What Am I Misunderstanding?

Dec 23, 2003 · Replies 8 · Jan 8, 2004

Replies: 8

Views: 6K

Newbie Asks "What Contains the Universe?

Dec 19, 2003 · Replies 17 · Jan 8, 2004

Replies: 17

Views: 4K

High School Two questions about space (new guy)

Jan 7, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 2K

High School How Do Astronomers Determine the Distance of Stars?

Jan 2, 2004 · Replies 15 · Jan 6, 2004

Replies: 15

Views: 8K

Graduate How Do Cosmologists Account for the Age of Quasars?

Jan 3, 2004 · Replies 4 · Jan 6, 2004

Replies: 4

Views: 8K

Is the Celestron C-6N Reflector a Good Choice?

Jan 2, 2004 · Replies 2 · Jan 6, 2004

Replies: 2

Views: 3K

High School What Discoveries Could NASA's Mars Rover Spirit Make in Gusev Crater?

Jan 6, 2004 · Replies 1 · Jan 6, 2004

Replies: 1

Views: 3K

Graduate The universe has unique center after all->

Jan 5, 2004 · Replies 2 · Jan 5, 2004

Replies: 2

Views: 3K

Graduate Leap Second Mystery: Is Earth's Orbit Slowing?

Jan 3, 2004 · Replies 1 · Jan 4, 2004

Replies: 1

Views: 3K

Graduate How can a black hole attract nothing at all?

Dec 26, 2003 · Replies 13 · Jan 4, 2004

Replies: 13

Views: 3K

Graduate Discovering the Mysterious Energy in the Universe

Jan 2, 2004 · Replies 5 · Jan 3, 2004

Replies: 5

Views: 3K

High School Is there more than just one Universe?

Dec 29, 2003 · Replies 4 · Jan 3, 2004

Replies: 4

Views: 3K

Undergrad Motion of J002E3: Captured Object's Orbit Around Earth

Jan 1, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Views: 3K

Graduate Gravity of Black Hole: Explaining its Effects Outside

Jan 2, 2004 · Replies 2 · Jan 2, 2004

Replies: 2

Views: 4K

Graduate What Happens When Space-Time Reaches the Speed of Light?

Jan 1, 2004 · Replies 2 · Jan 1, 2004

Replies: 2

Views: 2K

Undergrad How Did Beagle 2 Navigate Its Final Approach to Mars?

Dec 24, 2003 · Replies 9 · Dec 31, 2003

Replies: 9

Views: 3K

Graduate Laws of gravitational attraction

Dec 3, 2003 · Replies 21 · Dec 30, 2003

Replies: 21

Views: 5K

Graduate What is the maximum iron core mass of a star before collapse?

May 23, 2003 · Replies 19 · Dec 29, 2003

Replies: 19

Views: 11K

Graduate Does Empty Space Truly Extend Infinitely Beyond Our Universe?

Dec 24, 2003 · Replies 17 · Dec 29, 2003

Replies: 17

Views: 4K

Undergrad Mass of Black Hole at Size of Tennis ball: Facts & Variations

Dec 29, 2003 · Replies 1 · Dec 29, 2003

Replies: 1

Views: 3K

High School Can We Visualize Exoplanetary Systems and Understand Binary Decay Rates?

Nov 22, 2003 · Replies 20 · Dec 29, 2003

Replies: 20

Views: 6K

Communication with Extraterrestrial Life

Oct 4, 2003 · Replies 52 · Dec 28, 2003

2

Replies: 52

Views: 13K

Undergrad Could the Star of Bethlehem Have Been a Supernova?

Dec 23, 2003 · Replies 2 · Dec 28, 2003

Replies: 2

Views: 3K

Graduate Neutrino Flux of the Solar Stellar Core: A Fascinating Image

Dec 27, 2003 · Replies 1 · Dec 28, 2003

Replies: 1

Views: 4K

Graduate Theory of the big bang and other universes

Dec 18, 2003 · Replies 18 · Dec 27, 2003

Replies: 18

Views: 5K

Graduate Unraveling the Mysteries of the Universe: Expansion and Collapse

Dec 26, 2003 · Replies 1 · Dec 26, 2003

Replies: 1

Views: 3K

High School How Does Moon Dust Exist Without Weathering?

Dec 25, 2003 · Replies 7 · Dec 26, 2003

Replies: 7

Views: 4K

Graduate What Really Happened Before the Big Bang?

Dec 22, 2003 · Replies 5 · Dec 24, 2003

Replies: 5

Views: 3K

High School Something odd, I need an explanation desperately

Dec 21, 2003 · Replies 5 · Dec 23, 2003

Replies: 5

Views: 4K

Are Miss World and Miss Universe Two Different Events?

Dec 23, 2003 · Replies 3 · Dec 23, 2003

Replies: 3

Views: 6K

Graduate Is God in the Details of the Universe?

Dec 17, 2003 · Replies 8 · Dec 23, 2003

Replies: 8

Views: 4K

MENSA Usenet Group Discuss Space Aliens

Dec 22, 2003 · Replies 3 · Dec 23, 2003

Replies: 3

Views: 3K

When exactly does the year start getting shorter again?

Dec 21, 2003 · Replies 1 · Dec 21, 2003

Replies: 1

Views: 2K

Graduate Spatial folding/compression/expansion be accomplished artificially

Dec 20, 2003 · Replies 1 · Dec 21, 2003

Replies: 1

Views: 2K

Graduate Understanding the Effects of Earth's Precession on Planet Cores | Crystalinks"

Nov 10, 2003 · Replies 3 · Dec 20, 2003

Replies: 3

Views: 6K

Graduate Calculating The Age Of The Universe

Dec 18, 2003 · Replies 14 · Dec 19, 2003

Replies: 14

Views: 5K

Undergrad What Happens if We Remove a Planet from the Solar System?

Sep 23, 2003 · Replies 39 · Dec 19, 2003

2

Replies: 39

Views: 12K

Graduate How Does a Singularity Form in a Collapsing Star?

Jun 23, 2003 · Replies 14 · Dec 19, 2003

Replies: 14

Views: 4K

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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