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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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Finding Solar Path Data - Resources for Sun Position in Sky

Feb 10, 2005 · Replies 2 · Feb 10, 2005

Replies: 2

Views: 2K

Galaxy was headed at us at like 100 times faster than a bullet

Jan 31, 2005 · Replies 14 · Feb 10, 2005

Replies: 14

Views: 3K

What is M Theory? Understanding the Basics of this Fascinating Concept

Feb 8, 2005 · Replies 3 · Feb 9, 2005

Replies: 3

Views: 2K

How Can Light Exist When Time is Stopped?

Feb 9, 2005 · Replies 5 · Feb 9, 2005

Replies: 5

Views: 2K

Does an infinite universe always repeat its parts?

Jan 20, 2005 · Replies 15 · Feb 9, 2005

Replies: 15

Views: 4K

Infinite Universe Energy: CMBR Impact?

Feb 9, 2005 · Replies 1 · Feb 9, 2005

Replies: 1

Views: 2K

Discover the Latest Baryonic Mass Figures from the Galaxy Red Shift Survey

Feb 7, 2005 · Replies 7 · Feb 8, 2005

Replies: 7

Views: 3K

Is Sending Machines into Deep Space a Wise Decision for Humanity's Future?

Jan 31, 2005 · Replies 12 · Feb 8, 2005

Replies: 12

Views: 3K

Is an Astronomy Degree Practical?

Jan 29, 2005 · Replies 10 · Feb 8, 2005

Replies: 10

Views: 7K

Is NASA Replacing Columbia with a New Shuttle?

Feb 2, 2005 · Replies 10 · Feb 7, 2005

Replies: 10

Views: 3K

How Is Dark Matter So Hot Yet Invisible?

Feb 4, 2005 · Replies 10 · Feb 7, 2005

Replies: 10

Views: 3K

Origin of Matter in Universe: Survey & Questions

Jan 28, 2005 · Replies 7 · Feb 7, 2005

Replies: 7

Views: 2K

GoldBarz asks: wd laws work in different dimens. universe?

Feb 4, 2005 · Replies 5 · Feb 7, 2005

Replies: 5

Views: 2K

The Big Splat: Origin of Our Moon

Feb 4, 2005 · Replies 3 · Feb 6, 2005

Replies: 3

Views: 5K

The Upper Limit of Star Mass: Theories and Uncertainties | arXiv.org"

Feb 5, 2005 · Replies 3 · Feb 6, 2005

Replies: 3

Views: 4K

Calculate Sun Angle: Length of Object by Shadow

Feb 2, 2005 · Replies 7 · Feb 5, 2005

Replies: 7

Views: 13K

Is Science Fiction a Legitimate Source of Scientific Ideas?

Jan 28, 2005 · Replies 8 · Feb 5, 2005

Replies: 8

Views: 3K

Find the universe point of origin based on location of cellestrella bodies?

Jan 25, 2005 · Replies 4 · Feb 4, 2005

Replies: 4

Views: 2K

Unveiling the Mystery of Antimatter in the Universe

Jan 22, 2005 · Replies 8 · Feb 4, 2005

Replies: 8

Views: 3K

State Your Opinion on String Theory

Feb 3, 2005 · Replies 5 · Feb 4, 2005

Replies: 5

Views: 2K

Hubbles's law and the Dark Energy Component

Feb 4, 2005 · Replies 4 · Feb 4, 2005

Replies: 4

Views: 3K

ET Visitors: Scientists See High Likelihood

Jan 14, 2005 · Replies 22 · Feb 4, 2005

Replies: 22

Views: 4K

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

Feb 3, 2005 · Replies 3 · Feb 3, 2005

Replies: 3

Views: 2K

I have a Question about the big bang theory

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

Replies: 10

Views: 3K

Are Branes the Key to Understanding Multiple Universes?

Feb 2, 2005 · Replies 8 · Feb 3, 2005

Replies: 8

Views: 2K

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

Feb 2, 2005 · Replies 1 · Feb 2, 2005

Replies: 1

Views: 2K

Life Improbable In 4D+ Universes

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

Replies: 11

Views: 3K

Could a Closed Universe Reverse Time During Collapse?

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

Replies: 2

Views: 3K

In The Future Beyond The Dark Era

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

Replies: 4

Views: 5K

Black Hole: Infinite Density, Infinite Buoyancy?

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

Replies: 7

Views: 9K

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

CMB, Sky Surveys, & Computational Cosmology

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

Replies: 7

Views: 2K

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

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

Replies: 16

Views: 4K

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

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

Replies: 13

Views: 4K

Question regarding Supernova SN1987

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

Replies: 4

Views: 2K

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

Save the Hubble: Unmanned Rocket Solution

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

Replies: 9

Views: 6K

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

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

Replies: 3

Views: 2K

The largest explosion ever seen in space

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

Replies: 8

Views: 4K

Spacetime interval formula - what's the d?

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

Replies: 8

Views: 6K

Researching Super-galactic Plane & Ancient Cosmology

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

Replies: 7

Views: 10K

Is Moisture Harmful to Telescope Lenses in Cold Weather?

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

Replies: 2

Views: 2K

What Existed Before the Big Bang?

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

Replies: 28

Views: 10K

Couldn't the end of spacetime cause spacetime?

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

Replies: 12

Views: 4K

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

Giant Galactic Blobs: Uncovering Dark Matter?

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

2

Replies: 39

Views: 9K

Is dark energy needed in a perturbed universe.

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

Replies: 7

Views: 2K

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

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

Replies: 9

Views: 6K

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

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

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

Replies: 1

Views: 3K

What Causes Earth's Tilt on Its Axis?

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

Replies: 4

Views: 11K

What is the Mass-Luminosity Relationship for Stars?

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

Replies: 1

Views: 7K

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

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

Replies: 6

Views: 3K

Where are the solar systems like our own?

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

Replies: 5

Views: 3K

Antimatter in Space: How Could It Exist?

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

Replies: 2

Views: 2K

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

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

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

Replies: 13

Views: 6K

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

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

Create Artificial Atmosphere: Pros & Cons

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

Replies: 2

Views: 5K

Measuring the rotation speed of Io

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

Replies: 5

Views: 4K

Calculating E or M from a State Vector

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

Replies: 18

Views: 9K

Doppler effect and color of stars

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

Replies: 10

Views: 9K

Solving Math Problem: Get Help from Our Dudes - Kevin

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

Replies: 5

Views: 2K

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

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

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

Replies: 15

Views: 8K

Successful launch of Deep Impact

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

Replies: 4

Views: 3K

Topology & Universe Evolution: Finite or Infinite Age?

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

Replies: 12

Views: 3K

Black Holes: Compression of Mass & Movement at Absolute Zero

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

Replies: 13

Views: 3K

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

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

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

Replies: 2

Views: 25K

Will We Find Extraterrestrial Life Within the Next Twenty Years?

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

Replies: 19

Views: 3K

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

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

Replies: 5

Views: 9K

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

How Will the Universe End? Big Crunch Theory

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

2

Replies: 47

Views: 7K

Friday the 13th, 2029? The odds of impact

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

2

Replies: 36

Views: 8K

Big Bang: How Did the Energy Get There?

Jan 5, 2005 · Replies 9 · Jan 8, 2005

Replies: 9

Views: 3K

Under what conditions does star bifurcation occur?

Jan 5, 2005 · Replies 3 · Jan 8, 2005

Replies: 3

Views: 3K

Terrestrial, asteroidal and gaseous

Jan 5, 2005 · Replies 3 · Jan 7, 2005

Replies: 3

Views: 3K

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

Jan 5, 2005 · Replies 3 · Jan 7, 2005

Replies: 3

Views: 3K

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

Jan 5, 2005 · Replies 1 · Jan 5, 2005

Replies: 1

Views: 2K

Gravitational Energy: Why Negative?

Jan 4, 2005 · Replies 3 · Jan 5, 2005

Replies: 3

Views: 2K

Pulsar Death: What Happens When a Pulsar Dies

Jan 1, 2005 · Replies 5 · Jan 4, 2005

Replies: 5

Views: 10K

Will 2005 bring stunning images of the moon Titan?

Jan 4, 2005 · Replies 1 · Jan 4, 2005

Replies: 1

Views: 2K

Varying Expansion Rates for Solar System

Jan 3, 2005 · Replies 1 · Jan 4, 2005

Replies: 1

Views: 4K

Testing cosmology, without assuming GR?

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

Replies: 15

Views: 3K

Ring Nebula: Synchrotron Radiation & Magnetic Fields

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

Replies: 5

Views: 7K

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

N-body simulation test with sun, earth and moon

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

Replies: 6

Views: 8K

Big Bang: Causes & Reasons Explained

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

Replies: 11

Views: 24K

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

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

Replies: 5

Views: 7K

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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