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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 Correct Understanding of Big Bang Theory

Dec 17, 2005 · Replies 3 · Dec 17, 2005

Replies: 3

Views: 3K

Graduate A theory of gravity based on special relativity

Dec 16, 2005 · Replies 7 · Dec 17, 2005

Replies: 7

Views: 3K

Graduate Space-Time Fabric: Is There Anything Beyond?

Dec 16, 2005 · Replies 1 · Dec 16, 2005

Replies: 1

Views: 4K

Graduate How is the Precession of Mercury's Perihelion Calculated and Explained?

Nov 28, 2005 · Replies 15 · Dec 16, 2005

Replies: 15

Views: 7K

Undergrad Understanding the Earth-Moon Center of Mass and Its Effects on Lunar Orbit

Dec 16, 2005 · Replies 7 · Dec 16, 2005

Replies: 7

Views: 10K

Graduate Big Bang and the Law of Conservation of Matter/Energy?

Dec 15, 2005 · Replies 3 · Dec 16, 2005

Replies: 3

Views: 7K

Graduate Explaining the Cuspy Halo Problem

Dec 15, 2005 · Replies 2 · Dec 16, 2005

Replies: 2

Views: 5K

High School Lifecycles of Stars: What Causes Gravity in the Beginning?

Dec 15, 2005 · Replies 1 · Dec 15, 2005

Replies: 1

Views: 3K

Have You Ever Watched the Movie Spaceballs?

Dec 13, 2005 · Replies 14 · Dec 14, 2005

Replies: 14

Views: 6K

Graduate Uncovering the Truth: Examining the Existence of Gravitational Waves

Dec 4, 2005 · Replies 37 · Dec 14, 2005

2

Replies: 37

Views: 7K

Graduate Discussion/essay for uni on the Inflation proscess

Dec 12, 2005 · Replies 24 · Dec 14, 2005

Replies: 24

Views: 6K

Undergrad Does a Flat Universe Have an Edge?

Dec 12, 2005 · Replies 3 · Dec 14, 2005

Replies: 3

Views: 5K

Graduate Could the Big Bang Allow for an Infinite Universe?

Dec 12, 2005 · Replies 1 · Dec 12, 2005

Replies: 1

Views: 8K

High School Some spiral galaxies larger than previously reported

Dec 9, 2005 · Replies 9 · Dec 10, 2005

Replies: 9

Views: 3K

High School Why Do Galaxies Form Spiral Shapes?

Dec 10, 2005 · Replies 1 · Dec 10, 2005

Replies: 1

Views: 3K

What Defines the Space Opera Genre?

Dec 8, 2005 · Replies 6 · Dec 10, 2005

Replies: 6

Views: 3K

Graduate Can a galaxy have a recession velocity greater than the speed of light?

Dec 9, 2005 · Replies 4 · Dec 9, 2005

Replies: 4

Views: 4K

Graduate Solving for Mars Encounter Orbit w/Limited Info

Dec 2, 2005 · Replies 5 · Dec 9, 2005

Replies: 5

Views: 3K

Undergrad What is the true origin of gamma ray bursts?

Nov 23, 2005 · Replies 14 · Dec 9, 2005

Replies: 14

Views: 4K

Graduate Chicago: New Views of the Universe (Dec 8-13,2005)

Dec 8, 2005 · Replies 5 · Dec 8, 2005

Replies: 5

Views: 2K

Neutronium article @ Wikipedia in need of experts and knowledgeables

Dec 5, 2005 · Replies 5 · Dec 8, 2005

Replies: 5

Views: 3K

Graduate VLF Radio Astronomy: Research & Sources

Dec 4, 2005 · Replies 2 · Dec 8, 2005

Replies: 2

Views: 6K

Undergrad 4 Astronomy Problems: ASSISTANCE NEEDED PLEASE

Dec 4, 2005 · Replies 33 · Dec 7, 2005

2

Replies: 33

Views: 6K

Graduate Distinguishing MOND from dark matter

Nov 27, 2005 · Replies 15 · Dec 6, 2005

Replies: 15

Views: 4K

Graduate What role do orbits play in Earth's climate change?

Dec 2, 2005 · Replies 5 · Dec 6, 2005

Replies: 5

Views: 3K

Undergrad Kuiper Belt Info: Sidereal Period & Kepler's Equations

Dec 4, 2005 · Replies 4 · Dec 6, 2005

Replies: 4

Views: 3K

High School Solar System: Size, Planets & Comets

Dec 3, 2005 · Replies 2 · Dec 6, 2005

Replies: 2

Views: 4K

Stargazing Interested in Astrophotography? Check Out My Site!

Dec 4, 2005 · Replies 23 · Dec 5, 2005

Replies: 23

Views: 9K

Undergrad Missing Galaxies? Visible Universe Mystery

Dec 2, 2005 · Replies 11 · Dec 4, 2005

Replies: 11

Views: 4K

Undergrad Is a Miniature Solar System Being Born?

Nov 30, 2005 · Replies 3 · Dec 3, 2005

Replies: 3

Views: 3K

High School What is a Black Hole Actually Made Of?

Nov 28, 2005 · Replies 6 · Dec 3, 2005

Replies: 6

Views: 2K

Graduate Need WMAP error bars for CMBFAST power spectrum output

Jun 25, 2003 · Replies 2 · Dec 2, 2005

Replies: 2

Views: 7K

Undergrad The Universe as big as a basket ball?

Nov 28, 2005 · Replies 6 · Nov 30, 2005

Replies: 6

Views: 12K

Graduate What is Causing the Expansion of a Singular Particle in an Absorbed Universe?

Nov 23, 2005 · Replies 5 · Nov 30, 2005

Replies: 5

Views: 2K

Graduate Recent Supernovae Ia observations tend to rule out all the cosmologies

Nov 22, 2005 · Replies 7 · Nov 30, 2005

Replies: 7

Views: 4K

Graduate Paper - Sun not powered by H fusion

Nov 15, 2005 · Replies 29 · Nov 30, 2005

Replies: 29

Views: 5K

Graduate Could Flattened Disks Explain Galaxy Rotation Without Dark Matter?

Nov 30, 2005 · Replies 1 · Nov 30, 2005

Replies: 1

Views: 2K

High School Intro to Astronomy & Astrophysics

Nov 22, 2005 · Replies 4 · Nov 30, 2005

Replies: 4

Views: 8K

Undergrad Jupiter as a Gravitational lens?

Nov 27, 2005 · Replies 7 · Nov 30, 2005

Replies: 7

Views: 9K

Graduate Does natural selection apply extra-galactically?

Nov 9, 2005 · Replies 17 · Nov 30, 2005

Replies: 17

Views: 4K

Undergrad Edmund halley and the venus transit

Nov 26, 2005 · Replies 10 · Nov 29, 2005

Replies: 10

Views: 5K

Poll

Graduate Andre's Question: A or B Before C?

Nov 6, 2005 · Replies 21 · Nov 29, 2005

Replies: 21

Views: 3K

High School Probe returning with asteroid rock sample

Nov 28, 2005 · Replies 1 · Nov 28, 2005

Replies: 1

Views: 2K

Graduate What Is the Entropy of a Black Hole?

Nov 26, 2005 · Replies 3 · Nov 27, 2005

Replies: 3

Views: 6K

Poll of exoplanet-finders about best methods

Nov 21, 2005 · Replies 9 · Nov 26, 2005

Replies: 9

Views: 2K

Graduate Why Did the Big Bang Create Irregular Bumps Instead of Expanding Uniformly?

Nov 23, 2005 · Replies 2 · Nov 24, 2005

Replies: 2

Views: 2K

Undergrad Why are our planets and galaxy in a plane shape?

Nov 23, 2005 · Replies 3 · Nov 24, 2005

Replies: 3

Views: 3K

Delay of JWST a Major Setback for Astronomy

Nov 21, 2005 · Replies 6 · Nov 23, 2005

Replies: 6

Views: 4K

Graduate Gravitational tractor for towing asteroids

Nov 22, 2005 · Replies 1 · Nov 22, 2005

Replies: 1

Views: 3K

Undergrad Why does a gas cloud spontanously rotate?

Oct 9, 2005 · Replies 12 · Nov 22, 2005

Replies: 12

Views: 8K

Graduate Could Quasars Be Ejection Events Instead of Collisions?

Nov 15, 2005 · Replies 4 · Nov 21, 2005

Replies: 4

Views: 2K

High School Speed of light? Or velocity of free space?

Nov 20, 2005 · Replies 4 · Nov 20, 2005

Replies: 4

Views: 7K

High School Center of Galaxys: Red Giant or Supernova?

Oct 27, 2005 · Replies 16 · Nov 20, 2005

Replies: 16

Views: 7K

Will the Venus Express Solve Mysteries or Uncover More?

Nov 9, 2005 · Replies 4 · Nov 19, 2005

Replies: 4

Views: 3K

PF is taken over by space robots?

Nov 15, 2005 · Replies 64 · Nov 19, 2005

3

Replies: 64

Views: 6K

Graduate If space is flat then what is directly under the planets?

Nov 19, 2005 · Replies 9 · Nov 19, 2005

Replies: 9

Views: 32K

Graduate Planets cause a warp in the fabric of space time

Nov 18, 2005 · Replies 3 · Nov 18, 2005

Replies: 3

Views: 2K

Graduate Flat Universe Theory: Questions & Answers

Nov 15, 2005 · Replies 5 · Nov 18, 2005

Replies: 5

Views: 3K

Graduate Does Gravity Play a Significant Role in Accretion?

Nov 16, 2005 · Replies 9 · Nov 17, 2005

Replies: 9

Views: 4K

Graduate Astronomy Problems: Please Look/help

Nov 13, 2005 · Replies 93 · Nov 17, 2005

4

Replies: 93

Views: 12K

Graduate What Are the Best Papers on Dark Matter and Dark Energy?

Nov 16, 2005 · Replies 2 · Nov 17, 2005

Replies: 2

Views: 2K

Graduate Patent 4 a close 2 C space vehicle drive

Nov 14, 2005 · Replies 3 · Nov 16, 2005

Replies: 3

Views: 3K

Graduate Calculating Speed of Stationary Object Falling Towards Earth

Nov 12, 2005 · Replies 23 · Nov 16, 2005

Replies: 23

Views: 14K

Graduate Settlement on Moon: Artificial Gravity & Feasibility

Nov 13, 2005 · Replies 6 · Nov 15, 2005

Replies: 6

Views: 5K

Graduate Acceleration of charges at Big Bang

Nov 13, 2005 · Replies 10 · Nov 15, 2005

Replies: 10

Views: 3K

Undergrad Does Gravitational Attraction Cause Energy Transfer Between Celestial Bodies?

Nov 14, 2005 · Replies 3 · Nov 14, 2005

Replies: 3

Views: 4K

Undergrad What Do We Know About the Composition of Mars' Moons, Phobos and Deimos?

Nov 13, 2005 · Replies 2 · Nov 14, 2005

Replies: 2

Views: 3K

Undergrad Gravitational Lensing: Why Does it Only Create Clones?

Nov 9, 2005 · Replies 13 · Nov 14, 2005

Replies: 13

Views: 3K

Graduate Models for Compactification from Inflation?

Jul 21, 2003 · Replies 2 · Nov 14, 2005

Replies: 2

Views: 4K

High School What Can You See With a Telescope During the Day?

Nov 14, 2005 · Replies 1 · Nov 14, 2005

Replies: 1

Views: 3K

Graduate Did Inflation Solve the Problem of the Universe's Original Gravity?

Nov 13, 2005 · Replies 7 · Nov 14, 2005

Replies: 7

Views: 4K

Undergrad Seeing light from early Universe

Nov 9, 2005 · Replies 22 · Nov 13, 2005

Replies: 22

Views: 4K

Graduate Shrinking Universe: Visible Universe & Universal Center of Mass

Mar 10, 2005 · Replies 17 · Nov 13, 2005

Replies: 17

Views: 14K

Graduate There must be a center to it all.

Mar 21, 2004 · Replies 29 · Nov 13, 2005

Replies: 29

Views: 7K

Graduate Accuracy in Space: Can 10000kg Bolts & Nuts be Precisely Screwed?

Nov 8, 2005 · Replies 12 · Nov 13, 2005

Replies: 12

Views: 3K

Should The Galaxy Have Been Colonized By Now?

Oct 26, 2005 · Replies 65 · Nov 12, 2005

3

Replies: 65

Views: 9K

Graduate Black Holes: The Possibility of Energy to Matter Conversion

Nov 12, 2005 · Replies 5 · Nov 12, 2005

Replies: 5

Views: 2K

Graduate What Are the Chances of Different Physical Laws If We Restarted the Big Bang?

Nov 3, 2005 · Replies 25 · Nov 12, 2005

Replies: 25

Views: 4K

Graduate Can We Pinpoint the Direction of the Big Bang's Origin?

Nov 11, 2005 · Replies 6 · Nov 12, 2005

Replies: 6

Views: 3K

Graduate Is Dark Matter the Unruh effect applied to the acceleration of Gravity?

Nov 10, 2005 · Replies 3 · Nov 11, 2005

Replies: 3

Views: 5K

Poll

Graduate What Are the Implications of Being the First Intelligent Life in the Galaxy?

Nov 2, 2005 · Replies 39 · Nov 11, 2005

2

Replies: 39

Views: 6K

Graduate Could the Speed of Light be Calculated Differently?

Nov 11, 2005 · Replies 1 · Nov 11, 2005

Replies: 1

Views: 3K

Graduate Anyone care to guess the size/diameter of the Universe?

Nov 10, 2005 · Replies 10 · Nov 11, 2005

Replies: 10

Views: 3K

Graduate Preservation of Space: Is There a Model?

Oct 18, 2005 · Replies 9 · Nov 10, 2005

Replies: 9

Views: 3K

High School Mysterious Spin of the Moon: How Does it Change?

Nov 9, 2005 · Replies 5 · Nov 10, 2005

Replies: 5

Views: 4K

Graduate Energy Requirements for Compressing Matter into a Black Hole

Nov 6, 2005 · Replies 3 · Nov 9, 2005

Replies: 3

Views: 3K

Stargazing What features should beginners look for when purchasing a telescope?

Nov 5, 2005 · Replies 7 · Nov 9, 2005

Replies: 7

Views: 3K

Graduate Glass Planets: Common and Detectable in Our Galactic Neighborhood?

Nov 8, 2005 · Replies 1 · Nov 8, 2005

Replies: 1

Views: 2K

Undergrad Why Does Venus Rotate Backwards?

Nov 4, 2005 · Replies 25 · Nov 8, 2005

Replies: 25

Views: 14K

High School What is the Truth about Black Holes and Light Holes?

Nov 4, 2005 · Replies 10 · Nov 8, 2005

Replies: 10

Views: 3K

Graduate Is There a Way to Distinguish Between Singularity and Matter in Black Holes?

Nov 3, 2005 · Replies 22 · Nov 8, 2005

Replies: 22

Views: 4K

Graduate Inside the Black Hole: Unravelling Its Mysteries

Nov 3, 2005 · Replies 17 · Nov 8, 2005

Replies: 17

Views: 4K

Undergrad Why are geosynchronous orbirs in equatorial plane circular?

Oct 25, 2005 · Replies 13 · Nov 8, 2005

Replies: 13

Views: 5K

Undergrad IS IT POSSIBLE TO CREATE A TRANSPARENT SHIELD FOR SPACE STATIONS?

Nov 8, 2005 · Replies 2 · Nov 8, 2005

Replies: 2

Views: 3K

Stargazing Telescope acting like microscope

Nov 8, 2005 · Replies 3 · Nov 8, 2005

Replies: 3

Views: 4K

Graduate Can White Holes Challenge the Second Law of Thermodynamics?

Nov 6, 2005 · Replies 4 · Nov 8, 2005

Replies: 4

Views: 2K

Undergrad [stars] Nuclear Fuel usage rate

Sep 8, 2005 · Replies 26 · Nov 7, 2005

Replies: 26

Views: 9K

Graduate What Happens to the Universe if Omega Equals Exactly 1?

Nov 3, 2005 · Replies 3 · Nov 7, 2005

Replies: 3

Views: 3K

Stargazing Animation I made last night of Mars

Nov 3, 2005 · Replies 2 · Nov 7, 2005

Replies: 2

Views: 1K

Graduate Neutron Stars: Strong Force, Density & Black Holes

Nov 7, 2005 · Replies 3 · Nov 7, 2005

Replies: 3

Views: 6K

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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