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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.

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Graduate The predictions it makes don't agree with reality. Enough said

Feb 3, 2005 · Replies 3 · Feb 3, 2005

Replies: 3

Views: 2K

High School I have a Question about the big bang theory

Jan 31, 2005 · Replies 10 · Feb 3, 2005

Replies: 10

Views: 3K

Graduate Are Branes the Key to Understanding Multiple Universes?

Feb 2, 2005 · Replies 8 · Feb 3, 2005

Replies: 8

Views: 2K

Graduate Does Cosmology Need Radical Ideas Like Transforming Dark Matter and Dark Energy?

Feb 2, 2005 · Replies 1 · Feb 2, 2005

Replies: 1

Views: 2K

Graduate Life Improbable In 4D+ Universes

Jan 31, 2005 · Replies 11 · Feb 2, 2005

Replies: 11

Views: 3K

Graduate Could a Closed Universe Reverse Time During Collapse?

Jan 30, 2005 · Replies 2 · Feb 1, 2005

Replies: 2

Views: 3K

Graduate In The Future Beyond The Dark Era

Jan 31, 2005 · Replies 4 · Feb 1, 2005

Replies: 4

Views: 5K

Graduate Black Hole: Infinite Density, Infinite Buoyancy?

Jan 27, 2005 · Replies 7 · Feb 1, 2005

Replies: 7

Views: 9K

Graduate Is Our Understanding of Dark Matter and Dark Energy Based on Flawed Assumptions?

Jan 20, 2005 · Replies 2 · Feb 1, 2005

Replies: 2

Views: 2K

Graduate CMB, Sky Surveys, & Computational Cosmology

Jan 30, 2005 · Replies 7 · Jan 31, 2005

Replies: 7

Views: 2K

Undergrad What are the smallest orbital masses that can exist in space?

Jan 28, 2005 · Replies 16 · Jan 31, 2005

Replies: 16

Views: 4K

Graduate What is the nature of baryonic dark matter in Galactic Blobs?

Jan 28, 2005 · Replies 13 · Jan 31, 2005

Replies: 13

Views: 4K

Undergrad Question regarding Supernova SN1987

Jan 30, 2005 · Replies 4 · Jan 31, 2005

Replies: 4

Views: 2K

Undergrad Was the sun ever a blue star in the early stages of its life?

Jan 28, 2005 · Replies 17 · Jan 30, 2005

Replies: 17

Views: 6K

Undergrad Save the Hubble: Unmanned Rocket Solution

Jan 22, 2005 · Replies 9 · Jan 29, 2005

Replies: 9

Views: 6K

Graduate Uncovering the Mysteries of the Universe: Questions, Answers, and Theories

Jan 22, 2005 · Replies 3 · Jan 28, 2005

Replies: 3

Views: 2K

Undergrad The largest explosion ever seen in space

Jan 6, 2005 · Replies 8 · Jan 27, 2005

Replies: 8

Views: 4K

Graduate Spacetime interval formula - what's the d?

Jan 27, 2005 · Replies 8 · Jan 27, 2005

Replies: 8

Views: 6K

Graduate Researching Super-galactic Plane & Ancient Cosmology

Jan 25, 2005 · Replies 7 · Jan 27, 2005

Replies: 7

Views: 10K

High School Is Moisture Harmful to Telescope Lenses in Cold Weather?

Jan 27, 2005 · Replies 2 · Jan 27, 2005

Replies: 2

Views: 2K

Undergrad What Existed Before the Big Bang?

Jan 14, 2005 · Replies 28 · Jan 26, 2005

Replies: 28

Views: 11K

Graduate Couldn't the end of spacetime cause spacetime?

Nov 27, 2004 · Replies 12 · Jan 26, 2005

Replies: 12

Views: 4K

Undergrad Long Lost Star Catalog Found in Plain Sight

Jan 25, 2005 · Replies 2 · Jan 25, 2005

Replies: 2

Views: 3K

Has the Tsunami Changed Our Pole Star?

Jan 25, 2005 · Replies 2 · Jan 25, 2005

Replies: 2

Views: 5K

Graduate Giant Galactic Blobs: Uncovering Dark Matter?

Jan 11, 2005 · Replies 39 · Jan 24, 2005

2

Replies: 39

Views: 9K

Graduate Is dark energy needed in a perturbed universe.

Jan 21, 2005 · Replies 7 · Jan 24, 2005

Replies: 7

Views: 2K

Graduate What Causes the Bright Streaks on Saturn's Moon Titan?

Jan 4, 2005 · Replies 9 · Jan 24, 2005

Replies: 9

Views: 6K

Graduate Is the Universe Losing Mass Due to Heat Loss and Dark Energy Expansion?

Jan 21, 2005 · Replies 17 · Jan 24, 2005

Replies: 17

Views: 6K

Hubble fix-up funds cut (MSN 21 Jan)

Jan 21, 2005 · Replies 9 · Jan 24, 2005

Replies: 9

Views: 2K

Huygens Office Pool Bets: Friday's Options

Jan 12, 2005 · Replies 73 · Jan 22, 2005

3

Replies: 73

Views: 10K

High School Velocity of a galaxy, is it the rotating speed around itself?

Jan 22, 2005 · Replies 1 · Jan 22, 2005

Replies: 1

Views: 3K

High School What Causes Earth's Tilt on Its Axis?

Jan 21, 2005 · Replies 4 · Jan 22, 2005

Replies: 4

Views: 11K

Graduate What is the Mass-Luminosity Relationship for Stars?

Jan 20, 2005 · Replies 1 · Jan 22, 2005

Replies: 1

Views: 7K

Graduate The Big Bang & Its Mysterious Origins: Seeking Thoughts & Ideas

Jan 11, 2005 · Replies 6 · Jan 21, 2005

Replies: 6

Views: 3K

Undergrad Where are the solar systems like our own?

Jan 12, 2005 · Replies 5 · Jan 21, 2005

Replies: 5

Views: 3K

Graduate Antimatter in Space: How Could It Exist?

Jan 19, 2005 · Replies 2 · Jan 20, 2005

Replies: 2

Views: 2K

Undergrad Are Cosmic Rays Particles or Waves?

Jan 18, 2005 · Replies 12 · Jan 20, 2005

Replies: 12

Views: 3K

Stargazing Neutrino Telescope Report: Astrophysics & Cosmology Working Group

Jan 12, 2005 · Replies 1 · Jan 20, 2005

Replies: 1

Views: 2K

Graduate What Are the Radiation Levels Inside and Outside Earth's Belts?

Jan 18, 2005 · Replies 13 · Jan 20, 2005

Replies: 13

Views: 6K

High School Universe Expansion: How Does It Work?

Jan 17, 2005 · Replies 6 · Jan 19, 2005

Replies: 6

Views: 3K

The Unending Universe: What Comes Next?

Jan 18, 2005 · Replies 1 · Jan 19, 2005

Replies: 1

Views: 2K

Graduate Bekenstein's rival to Dark Matter

Dec 29, 2004 · Replies 9 · Jan 18, 2005

Replies: 9

Views: 4K

Have you seen new images of Titan?

Jan 17, 2005 · Replies 3 · Jan 17, 2005

Replies: 3

Views: 3K

Undergrad Create Artificial Atmosphere: Pros & Cons

Jan 16, 2005 · Replies 2 · Jan 17, 2005

Replies: 2

Views: 5K

Undergrad Measuring the rotation speed of Io

Jan 16, 2005 · Replies 5 · Jan 17, 2005

Replies: 5

Views: 4K

Graduate Calculating E or M from a State Vector

Oct 15, 2004 · Replies 18 · Jan 15, 2005

Replies: 18

Views: 9K

Undergrad Doppler effect and color of stars

Jan 12, 2005 · Replies 10 · Jan 14, 2005

Replies: 10

Views: 9K

Graduate Solving Math Problem: Get Help from Our Dudes - Kevin

Jan 13, 2005 · Replies 5 · Jan 14, 2005

Replies: 5

Views: 2K

High School Deep Impact: NASA's Mission to Smash a Comet on the Fourth of July

Jan 14, 2005 · Replies 1 · Jan 14, 2005

Replies: 1

Views: 4K

High School How does the Earth's atmosphere affect the perception of color in space?

Sep 19, 2004 · Replies 15 · Jan 13, 2005

Replies: 15

Views: 9K

Successful launch of Deep Impact

Jan 12, 2005 · Replies 4 · Jan 13, 2005

Replies: 4

Views: 3K

Graduate Topology & Universe Evolution: Finite or Infinite Age?

Dec 20, 2004 · Replies 12 · Jan 13, 2005

Replies: 12

Views: 3K

Graduate Black Holes: Compression of Mass & Movement at Absolute Zero

Jan 6, 2005 · Replies 13 · Jan 13, 2005

Replies: 13

Views: 3K

Graduate What Role Do Shock Waves Play in Star Formation from Interstellar Clouds?

Jan 11, 2005 · Replies 2 · Jan 12, 2005

Replies: 2

Views: 3K

Astronomers reveal biggest stars yet seen

Jan 11, 2005 · Replies 2 · Jan 12, 2005

Replies: 2

Views: 3K

Undergrad Apogee & Perigee: What Does "a" Stand For?

Jan 11, 2005 · Replies 2 · Jan 11, 2005

Replies: 2

Views: 25K

High School Will We Find Extraterrestrial Life Within the Next Twenty Years?

Jan 8, 2005 · Replies 19 · Jan 10, 2005

Replies: 19

Views: 3K

High School What is a Main Sequence and Why is it Important for Stars?

Jan 8, 2005 · Replies 5 · Jan 10, 2005

Replies: 5

Views: 9K

Graduate Neutron Star Matter & Planet X: What Could Be Lurking Closer?

Jan 5, 2005 · Replies 30 · Jan 10, 2005

2

Replies: 30

Views: 8K

New U.S. Plan for Space Exploration

Jan 9, 2004 · Replies 17 · Jan 9, 2005

Replies: 17

Views: 4K

High School What Makes a Black Hole the Densest Place in the Universe?

Jan 4, 2005 · Replies 29 · Jan 8, 2005

Replies: 29

Views: 23K

Undergrad How Will the Universe End? Big Crunch Theory

Nov 22, 2004 · Replies 47 · Jan 8, 2005

2

Replies: 47

Views: 7K

High School Friday the 13th, 2029? The odds of impact

Dec 27, 2004 · Replies 36 · Jan 8, 2005

2

Replies: 36

Views: 8K

Undergrad Big Bang: How Did the Energy Get There?

Jan 5, 2005 · Replies 9 · Jan 8, 2005

Replies: 9

Views: 3K

Graduate Under what conditions does star bifurcation occur?

Jan 5, 2005 · Replies 3 · Jan 8, 2005

Replies: 3

Views: 3K

Undergrad Terrestrial, asteroidal and gaseous

Jan 5, 2005 · Replies 3 · Jan 7, 2005

Replies: 3

Views: 3K

Graduate Universe is 4% baryonic, 23% Dark matter, 73% Dark energy?

Jan 5, 2005 · Replies 3 · Jan 7, 2005

Replies: 3

Views: 3K

High School What are the best resources for studying NGC and Messier objects?

Jan 5, 2005 · Replies 1 · Jan 5, 2005

Replies: 1

Views: 2K

Graduate Gravitational Energy: Why Negative?

Jan 4, 2005 · Replies 3 · Jan 5, 2005

Replies: 3

Views: 3K

Undergrad Pulsar Death: What Happens When a Pulsar Dies

Jan 1, 2005 · Replies 5 · Jan 4, 2005

Replies: 5

Views: 11K

Will 2005 bring stunning images of the moon Titan?

Jan 4, 2005 · Replies 1 · Jan 4, 2005

Replies: 1

Views: 2K

Graduate Varying Expansion Rates for Solar System

Jan 3, 2005 · Replies 1 · Jan 4, 2005

Replies: 1

Views: 4K

Graduate Testing cosmology, without assuming GR?

Jan 1, 2005 · Replies 15 · Jan 4, 2005

Replies: 15

Views: 3K

Graduate Ring Nebula: Synchrotron Radiation & Magnetic Fields

Dec 26, 2004 · Replies 5 · Jan 3, 2005

Replies: 5

Views: 7K

Undergrad Investigating Solar Cycles and Their Effects

Jan 3, 2005 · Replies 1 · Jan 3, 2005

Replies: 1

Views: 2K

High School Did Comet Machholz Lack a Visible Tail?

Dec 27, 2004 · Replies 5 · Jan 2, 2005

Replies: 5

Views: 2K

The bermuda triangle is a black hole?

Dec 31, 2004 · Replies 3 · Dec 31, 2004

Replies: 3

Views: 21K

Graduate N-body simulation test with sun, earth and moon

Dec 27, 2004 · Replies 6 · Dec 30, 2004

Replies: 6

Views: 8K

Undergrad Big Bang: Causes & Reasons Explained

Dec 29, 2004 · Replies 11 · Dec 30, 2004

Replies: 11

Views: 25K

Where are the Best Spots to View the Milky Way in California?

Dec 30, 2004 · Replies 5 · Dec 30, 2004

Replies: 5

Views: 7K

High School Cause of Gravity: How Does It Work?

Dec 29, 2004 · Replies 8 · Dec 30, 2004

Replies: 8

Views: 9K

A Surprising Revelation: The Truth About Asteroids and Earth

Dec 29, 2004 · Replies 1 · Dec 30, 2004

Replies: 1

Views: 2K

Graduate Unexplained preference for infinite space.

Dec 20, 2004 · Replies 5 · Dec 29, 2004

Replies: 5

Views: 3K

Undergrad What Will Huygens Discover About Titan's Mysterious Atmosphere?

Dec 26, 2004 · Replies 4 · Dec 28, 2004

Replies: 4

Views: 3K

Stargazing Is it Possible for All Planets to Line Up?

Dec 27, 2004 · Replies 5 · Dec 28, 2004

Replies: 5

Views: 7K

Graduate Are Flaws in IMAP Data Affecting Our Understanding of Dark Matter?

Dec 25, 2004 · Replies 2 · Dec 28, 2004

Replies: 2

Views: 3K

Undergrad Why Does Venus Rotate Differently?

Dec 26, 2004 · Replies 5 · Dec 27, 2004

Replies: 5

Views: 3K

Graduate Can we be tricked into thinking W=-1

Dec 23, 2004 · Replies 1 · Dec 25, 2004

Replies: 1

Views: 2K

Undergrad What is the concept of concentrated mass?

Dec 15, 2004 · Replies 4 · Dec 24, 2004

Replies: 4

Views: 16K

Consensus: Streak in Image an Insect

Dec 21, 2004 · Replies 2 · Dec 24, 2004

Replies: 2

Views: 2K

High School Do Planets Generate Their Own Light?

Dec 23, 2004 · Replies 9 · Dec 24, 2004

Replies: 9

Views: 4K

Graduate Idea find black holes using grav. lensing

Dec 22, 2004 · Replies 4 · Dec 23, 2004

Replies: 4

Views: 2K

Graduate Gas Giant Ring Collapse Theory for Rocky Planet Formation

Dec 22, 2004 · Replies 1 · Dec 22, 2004

Replies: 1

Views: 3K

Possible Meteor Explosion Near Jakarta Causes Loud Noise, No Injuries Reported

Dec 21, 2004 · Replies 1 · Dec 21, 2004

Replies: 1

Views: 3K

Graduate Sun's Absolute Velocity: Molecular Measurements & Vacuum Experiments

Dec 21, 2004 · Replies 3 · Dec 21, 2004

Replies: 3

Views: 2K

Undergrad Astronomers observe some galaxy

Dec 17, 2004 · Replies 6 · Dec 21, 2004

Replies: 6

Views: 2K

Undergrad 10^6 X stronger than Earth¹s lightning: Some of Cassini's findings discussed

Dec 20, 2004 · Replies 1 · Dec 21, 2004

Replies: 1

Views: 3K

NOVA special on String/cosmology

Dec 19, 2004 · Replies 1 · Dec 20, 2004

Replies: 1

Views: 2K

What is the Role of Subspace in Sci-Fi Universes?

Dec 19, 2004 · Replies 4 · Dec 19, 2004

Replies: 4

Views: 14K

Earth's Abrupt Edge: 4B Year Old Star Encounter Revealed

Dec 19, 2004 · Replies 1 · Dec 19, 2004

Replies: 1

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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