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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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Asteroid Math: Get Help with Large Math Project

Nov 19, 2004 · Replies 4 · Nov 24, 2004

Replies: 4

Views: 7K

Latest Astronomy/Cosmology Research & Proposals

Nov 6, 2004 · Replies 16 · Nov 24, 2004

Replies: 16

Views: 5K

What is the Maximum Radial Velocity in a Simple Hyperbolic Orbit?

Nov 19, 2004 · Replies 20 · Nov 23, 2004

Replies: 20

Views: 14K

Universe be described with mass imbedded in space-time?

Oct 28, 2004 · Replies 5 · Nov 23, 2004

Replies: 5

Views: 9K

Deja vu is a ripple in space-time

Oct 26, 2004 · Replies 5 · Nov 23, 2004

Replies: 5

Views: 4K

Supernovae GRB Research: Insight for Fans

Oct 24, 2004 · Replies 25 · Nov 23, 2004

Replies: 25

Views: 5K

What is the role of life in the universe?

Nov 14, 2004 · Replies 62 · Nov 23, 2004

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Replies: 62

Views: 16K

Best way to get 'learn' Astrophysics

Nov 23, 2004 · Replies 1 · Nov 23, 2004

Replies: 1

Views: 7K

Scale factor in Robertson-Walker metric

Nov 18, 2004 · Replies 19 · Nov 23, 2004

Replies: 19

Views: 11K

The Discovery of a Z=10 Galaxy: Implications for the Early Universe

Apr 9, 2004 · Replies 17 · Nov 23, 2004

Replies: 17

Views: 4K

Star Cluster Gravity: Impact on Forces

Nov 21, 2004 · Replies 4 · Nov 22, 2004

Replies: 4

Views: 4K

Do Black Holes Really Emit Radiation?

Nov 13, 2004 · Replies 6 · Nov 22, 2004

Replies: 6

Views: 4K

What Existed Before the Big Bang?

Nov 5, 2004 · Replies 40 · Nov 22, 2004

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Replies: 40

Views: 7K

Stargazing What is the Soligor 8in telescope like?

Nov 20, 2004 · Replies 1 · Nov 21, 2004

Replies: 1

Views: 3K

Curvature of Space - Is it Still Relevant in Modern Physics?

Nov 17, 2004 · Replies 7 · Nov 21, 2004

Replies: 7

Views: 3K

Make Sense of our Solar System's Place in the Universe

Nov 20, 2004 · Replies 2 · Nov 21, 2004

Replies: 2

Views: 10K

Understanding the Effects of Black Holes on Mass and Gravity

Nov 20, 2004 · Replies 5 · Nov 21, 2004

Replies: 5

Views: 2K

What Is the Universe Expanding Into?

Nov 14, 2004 · Replies 5 · Nov 20, 2004

Replies: 5

Views: 5K

What shall we call this class of star?

Oct 6, 2004 · Replies 8 · Nov 19, 2004

Replies: 8

Views: 3K

Losing mass, gravity, curved space, and more

Nov 18, 2004 · Replies 8 · Nov 19, 2004

Replies: 8

Views: 4K

How Does Delta_k Transform in a Uniformly Moving Frame in Fourier Space?

Nov 18, 2004 · Replies 2 · Nov 18, 2004

Replies: 2

Views: 3K

How Was Thermal Equilibrium Achieved After Inflation?

Nov 17, 2004 · Replies 7 · Nov 18, 2004

Replies: 7

Views: 3K

Orbital Motion Help: Calculate Altitude of Spacecraft

Nov 16, 2004 · Replies 4 · Nov 17, 2004

Replies: 4

Views: 4K

Stargazing I'm looking to buy a telescope pretty soon

Nov 16, 2004 · Replies 8 · Nov 17, 2004

Replies: 8

Views: 3K

Big Bang Theory: What We Know So Far

Nov 14, 2004 · Replies 15 · Nov 17, 2004

Replies: 15

Views: 4K

Can Higher Order Curvature Theories of Gravity Solve the Dark Matter Puzzle?

Nov 9, 2004 · Replies 43 · Nov 17, 2004

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Replies: 43

Views: 8K

What happens as a neutron star collapses into a black hole

Nov 16, 2004 · Replies 9 · Nov 17, 2004

Replies: 9

Views: 10K

What is the mathematical explanation for the shepherd moons of Saturn?

Nov 15, 2004 · Replies 2 · Nov 17, 2004

Replies: 2

Views: 2K

Learn the Night Sky: Star Placement & Familiarization

Nov 14, 2004 · Replies 4 · Nov 15, 2004

Replies: 4

Views: 2K

Get Physics Help: Big Bang Explained

Nov 12, 2004 · Replies 3 · Nov 15, 2004

Replies: 3

Views: 3K

Theoretical Extinguishing of the Sun with water

Oct 8, 2004 · Replies 10 · Nov 15, 2004

Replies: 10

Views: 5K

Mach space in The Fabric of the Cosmos

Nov 7, 2004 · Replies 16 · Nov 14, 2004

Replies: 16

Views: 4K

Universe is expanding faster than the speed of light

Nov 13, 2004 · Replies 2 · Nov 13, 2004

Replies: 2

Views: 2K

Prove that 1 parsec = 3.26 light years?

Nov 13, 2004 · Replies 1 · Nov 13, 2004

Replies: 1

Views: 4K

Doppler effect distinguish whether the red/blue shift

Oct 8, 2004 · Replies 24 · Nov 13, 2004

Replies: 24

Views: 7K

Where Can I Find a Detailed Graph of Potential vs. Radius for All Orbits?

Nov 12, 2004 · Replies 1 · Nov 13, 2004

Replies: 1

Views: 5K

Are We Already on the Edge of the Universe?

Nov 11, 2004 · Replies 7 · Nov 12, 2004

Replies: 7

Views: 5K

Should I Change My PhD Program Due to Poor Supervision in Cosmology?

Nov 10, 2004 · Replies 8 · Nov 12, 2004

Replies: 8

Views: 3K

Will the asteroids eventually (re)form a 10th planet?

Oct 22, 2004 · Replies 4 · Nov 11, 2004

Replies: 4

Views: 4K

Doubts about the z = 10 galaxy of Roser Pello

Jul 7, 2004 · Replies 10 · Nov 11, 2004

Replies: 10

Views: 3K

Need help locating pulsar CP1133

Nov 9, 2004 · Replies 3 · Nov 10, 2004

Replies: 3

Views: 3K

Could a Neutron Star Be at the Centre of the Sun?

Nov 9, 2004 · Replies 4 · Nov 10, 2004

Replies: 4

Views: 2K

When will the Cosmos 1 solar sail spacecraft be launched?

Nov 10, 2004 · Replies 1 · Nov 10, 2004

Replies: 1

Views: 2K

Can a Planet Really Be Destroyed Like in Star Wars?

Nov 5, 2004 · Replies 10 · Nov 9, 2004

Replies: 10

Views: 4K

Stargazing QuickCam Astrophotography: Tips for Stunning Night Sky Photos

Nov 4, 2004 · Replies 4 · Nov 8, 2004

Replies: 4

Views: 10K

How Do Objects Move Near the Galactic Center?

Mar 5, 2004 · Replies 21 · Nov 8, 2004

Replies: 21

Views: 5K

How can I start studying astrophysics without a physics degree?

Nov 8, 2004 · Replies 1 · Nov 8, 2004

Replies: 1

Views: 2K

What is the Optimal Size for a Cosmological N-Body Simulation Box?

Nov 7, 2004 · Replies 2 · Nov 7, 2004

Replies: 2

Views: 3K

Newly revised paper on zero point energy and cosmological constant

Oct 23, 2004 · Replies 46 · Nov 7, 2004

2

Replies: 46

Views: 7K

The Physics of CMBR Anisotropies

Nov 3, 2004 · Replies 8 · Nov 6, 2004

Replies: 8

Views: 4K

Explain to me the concept of space time?

Nov 4, 2004 · Replies 3 · Nov 6, 2004

Replies: 3

Views: 3K

Super G String Theory: New String Theory Explained

Nov 4, 2004 · Replies 2 · Nov 5, 2004

Replies: 2

Views: 5K

Deriving Angular Resolution from Bolometric Flux, Spectral Type & Temp

Nov 3, 2004 · Replies 2 · Nov 4, 2004

Replies: 2

Views: 5K

Movie of stars orbiting a black hole

Oct 12, 2004 · Replies 3 · Nov 4, 2004

Replies: 3

Views: 18K

A rock, the earth, an ellipse and the joys of angular momentum

Oct 31, 2004 · Replies 3 · Nov 3, 2004

Replies: 3

Views: 5K

Can Curved Space Really Kill Me? Understanding the Theories of Relativity

Oct 21, 2004 · Replies 4 · Nov 2, 2004

Replies: 4

Views: 3K

Really exceeding the speed of light?

Oct 31, 2004 · Replies 6 · Nov 1, 2004

Replies: 6

Views: 3K

Calculate Fractional Abundance of HI,HII,H- & e- for Hydrogen

Oct 31, 2004 · Replies 1 · Nov 1, 2004

Replies: 1

Views: 2K

Large scale structure formation and nonlinearity onset

Sep 20, 2004 · Replies 5 · Nov 1, 2004

Replies: 5

Views: 4K

What is the original purpose of the Laplace-Runge Lenz vector?

Jul 16, 2004 · Replies 5 · Oct 31, 2004

Replies: 5

Views: 7K

What's Up with Titan's Unusual Clouds?

Oct 29, 2004 · Replies 2 · Oct 30, 2004

Replies: 2

Views: 2K

Stargazing Red Sox & Lunar Eclipse & astrology

Oct 29, 2004 · Replies 3 · Oct 29, 2004

Replies: 3

Views: 4K

What is Sean Carroll's Cosmology Primer?

Oct 25, 2004 · Replies 12 · Oct 29, 2004

Replies: 12

Views: 4K

The effect of curveture on space-time

Oct 28, 2004 · Replies 1 · Oct 29, 2004

Replies: 1

Views: 2K

Grav Sling Shot: Understanding Inelastic Collisions w/o Contact Forces

Oct 28, 2004 · Replies 1 · Oct 28, 2004

Replies: 1

Views: 2K

Stargazing Total Eclipse Tonight: Visible From Europe, South & North America

Oct 27, 2004 · Replies 6 · Oct 28, 2004

Replies: 6

Views: 3K

Is a Cosmological Constant necessary to explain the Universe's expansion rate?

Oct 23, 2004 · Replies 17 · Oct 28, 2004

Replies: 17

Views: 3K

Closest Image of Titan: Atmosphere Revealed

Oct 27, 2004 · Replies 3 · Oct 27, 2004

Replies: 3

Views: 3K

My second shallow question - about black hole¬

Oct 26, 2004 · Replies 7 · Oct 27, 2004

Replies: 7

Views: 3K

Titan Surface Probe: Cassini Flyby & Huygens Descent

Oct 23, 2004 · Replies 5 · Oct 27, 2004

Replies: 5

Views: 3K

What is Anti-Energy? Uses & Applications

Dec 20, 2003 · Replies 11 · Oct 27, 2004

Replies: 11

Views: 6K

Spacecraft traveled into space from Earth

Oct 25, 2004 · Replies 3 · Oct 26, 2004

Replies: 3

Views: 3K

Who is rotating around whom in the solar system?

Oct 23, 2004 · Replies 8 · Oct 26, 2004

Replies: 8

Views: 4K

Stargazing Telescopes and resolving angles problem

Oct 25, 2004 · Replies 2 · Oct 25, 2004

Replies: 2

Views: 3K

Dirac,large numbers and cosmology

Aug 3, 2004 · Replies 11 · Oct 25, 2004

Replies: 11

Views: 4K

What does this new twist in astrophysics reveal?

Oct 15, 2004 · Replies 11 · Oct 25, 2004

Replies: 11

Views: 3K

Has Frame Dragging Been Scientifically Proven?

Oct 24, 2004 · Replies 1 · Oct 24, 2004

Replies: 1

Views: 3K

Can we rotate 3D objects in 4D space?

Oct 22, 2004 · Replies 9 · Oct 24, 2004

Replies: 9

Views: 6K

Can a microscopic solar system exist?

Oct 20, 2004 · Replies 7 · Oct 24, 2004

Replies: 7

Views: 5K

Can planets exist around twin or triple-star systems?

Oct 23, 2004 · Replies 7 · Oct 23, 2004

Replies: 7

Views: 4K

A possible view of curved space/time?

Sep 29, 2004 · Replies 15 · Oct 23, 2004

Replies: 15

Views: 5K

Defining Planets and Moons: Size Matters

Oct 10, 2004 · Replies 14 · Oct 23, 2004

Replies: 14

Views: 8K

Link to Bush v. Kerry debate on the space program

Oct 19, 2004 · Replies 1 · Oct 23, 2004

Replies: 1

Views: 2K

Mutual solar-extrasolar orbital foci

Oct 22, 2004 · Replies 2 · Oct 22, 2004

Replies: 2

Views: 5K

Discover the JNow RA and Dec of L4 and L5 in the Sun/Earth System

Oct 18, 2004 · Replies 2 · Oct 22, 2004

Replies: 2

Views: 3K

Understanding Reddening and Its Impact on Light Scattering in Astronomy

Oct 12, 2004 · Replies 11 · Oct 22, 2004

Replies: 11

Views: 3K

Is the Universe Curved or Flat and How Does It Affect Energy?

Oct 21, 2004 · Replies 5 · Oct 22, 2004

Replies: 5

Views: 3K

Why does a spinning black hole's singularity form a ring?

Oct 16, 2004 · Replies 2 · Oct 21, 2004

Replies: 2

Views: 2K

Can a Planet Turn into a Star through Gas Accumulation?

Oct 21, 2004 · Replies 1 · Oct 21, 2004

Replies: 1

Views: 11K

Space Expansion: Earth-Sun, Nucleus-Electron?

Oct 10, 2004 · Replies 11 · Oct 20, 2004

Replies: 11

Views: 4K

Conditions for 2 Elliptical Orbits w/ Same Peri/Aphelion

Oct 19, 2004 · Replies 1 · Oct 19, 2004

Replies: 1

Views: 4K

Expansion of Universe and fine structure.

Oct 16, 2004 · Replies 15 · Oct 19, 2004

Replies: 15

Views: 4K

Dear Nereid and Phobos (seat belt on) can we talk about redshifts?

Jun 19, 2004 · Replies 88 · Oct 19, 2004

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Replies: 88

Views: 17K

The Universe is expanding Right?

Sep 8, 2004 · Replies 25 · Oct 19, 2004

Replies: 25

Views: 8K

Converting State Vectors for Solar System Bodies

Oct 8, 2004 · Replies 3 · Oct 18, 2004

Replies: 3

Views: 5K

Mysterious Green Stars in Patriotic Photos

Sep 7, 2004 · Replies 15 · Oct 17, 2004

Replies: 15

Views: 5K

The originator of magnetic helicity?

Oct 17, 2004 · Replies 4 · Oct 17, 2004

Replies: 4

Views: 2K

Nature News: Surprising Findings in 2004

Oct 16, 2004 · Replies 3 · Oct 16, 2004

Replies: 3

Views: 3K

Can Modifying Gravity Solve the Dark Energy Dilemma?

Oct 3, 2004 · Replies 34 · Oct 16, 2004

2

Replies: 34

Views: 5K

Living in a Closed-Loop Universe?

Oct 4, 2004 · Replies 11 · Oct 16, 2004

Replies: 11

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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