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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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High School Speed of Objects in Space - Is It the Same as On Earth?

Mar 24, 2006 · Replies 10 · Mar 26, 2006

Replies: 10

Views: 9K

Undergrad Likelyhood of Extraterrestrial Intelligence

Mar 18, 2003 · Replies 61 · Mar 26, 2006

3

Replies: 61

Views: 25K

Undergrad Help finding an Aitoff projection of constellations

Mar 25, 2006 · Replies 1 · Mar 25, 2006

Replies: 1

Views: 3K

Undergrad Orbit of almost 1 eccentricity

Mar 23, 2006 · Replies 6 · Mar 24, 2006

Replies: 6

Views: 4K

High School The Earth, Moon and Sun's gavity game.

Mar 23, 2006 · Replies 5 · Mar 24, 2006

Replies: 5

Views: 8K

Graduate The physics of dark matter & energy

Mar 23, 2006 · Replies 3 · Mar 23, 2006

Replies: 3

Views: 2K

High School Is the Universe Larger and Denser Than We Imagine?

Mar 20, 2006 · Replies 34 · Mar 23, 2006

2

Replies: 34

Views: 5K

High School Can a Moon Have Its Own Moon? Exploring Orbital Possibilities

Mar 22, 2006 · Replies 4 · Mar 23, 2006

Replies: 4

Views: 3K

Graduate Radiation in a Closed/Finite Universe?

Mar 22, 2006 · Replies 1 · Mar 22, 2006

Replies: 1

Views: 3K

Undergrad Galactic Plane Crossings and Mass Extinctions: Is There a Connection?

Mar 21, 2006 · Replies 6 · Mar 22, 2006

Replies: 6

Views: 3K

Poll

High School Is Seeing a Black Hole Possible?

Mar 17, 2006 · Replies 13 · Mar 22, 2006

Replies: 13

Views: 13K

High School The moon doesn`t rotate around it`s axis.

Mar 17, 2006 · Replies 15 · Mar 22, 2006

Replies: 15

Views: 7K

Undergrad Are Images of Space Distorted by Gravity?

Mar 16, 2006 · Replies 5 · Mar 22, 2006

Replies: 5

Views: 3K

Graduate Redshift > 1.46 means Recessional Velocity over C?

Mar 19, 2006 · Replies 8 · Mar 21, 2006

Replies: 8

Views: 7K

Undergrad Is the Vacuum Between Water Molecules the Same as Cosmic Space?

Mar 21, 2006 · Replies 1 · Mar 21, 2006

Replies: 1

Views: 4K

Graduate What are the fundamental constants that govern the properties of our universe?

Mar 21, 2006 · Replies 2 · Mar 21, 2006

Replies: 2

Views: 4K

Graduate Planetary retention of atmospheres

Mar 18, 2006 · Replies 3 · Mar 21, 2006

Replies: 3

Views: 5K

Graduate What is the highest redshift object ever observed in the universe?

Mar 19, 2006 · Replies 10 · Mar 21, 2006

Replies: 10

Views: 7K

Graduate First stars now thought to be 400 MLY after BB?

Mar 19, 2006 · Replies 6 · Mar 21, 2006

Replies: 6

Views: 2K

Undergrad Universe Q: How Far Away Are Objects Seen?

Mar 16, 2006 · Replies 8 · Mar 21, 2006

Replies: 8

Views: 3K

Graduate Understanding Universe Expansion & String Theory

Mar 20, 2006 · Replies 3 · Mar 20, 2006

Replies: 3

Views: 3K

Undergrad Vernal Equinox: Understanding the Yearly Variation

Mar 20, 2006 · Replies 4 · Mar 20, 2006

Replies: 4

Views: 4K

Undergrad Do Other Planets Have Radiation Belts Like Earth?

Mar 20, 2006 · Replies 2 · Mar 20, 2006

Replies: 2

Views: 4K

Graduate Is the Quasar in NGC 7319 Really Inside the Galaxy?

Mar 16, 2006 · Replies 17 · Mar 20, 2006

Replies: 17

Views: 10K

Graduate Empty Nest - possible or not possible aspect of Big Bang?

Feb 19, 2006 · Replies 12 · Mar 19, 2006

Replies: 12

Views: 3K

Undergrad Characteristics of globular clusters

Mar 17, 2006 · Replies 5 · Mar 18, 2006

Replies: 5

Views: 4K

Shoreline on Saturn's Moon Titan - Yahoo News

Sep 18, 2005 · Replies 6 · Mar 18, 2006

Replies: 6

Views: 3K

Graduate Compute Tidal Locking Radius: Planet/Moon Area

Mar 17, 2006 · Replies 2 · Mar 17, 2006

Replies: 2

Views: 9K

Graduate Universal Regeneration: Is Expansion Recycled?

Mar 14, 2006 · Replies 5 · Mar 17, 2006

Replies: 5

Views: 3K

Graduate How universal are the laws of physics?

Mar 16, 2006 · Replies 5 · Mar 17, 2006

Replies: 5

Views: 6K

Progress for Humanity: Examining the Cost of Experiments

Mar 2, 2006 · Replies 12 · Mar 17, 2006

Replies: 12

Views: 4K

Graduate Cosmological Event Horizon during Inflation

Mar 16, 2006 · Replies 2 · Mar 17, 2006

Replies: 2

Views: 4K

Graduate The Expanding Universe: Calculating Real-Time Distances of Objects

Mar 15, 2006 · Replies 9 · Mar 17, 2006

Replies: 9

Views: 4K

Graduate New WMAP Data: Check Out Figures 20 & 21 on Pages 48 & 49

Mar 16, 2006 · Replies 1 · Mar 17, 2006

Replies: 1

Views: 5K

Undergrad Expanding Universe: Mass or Space-Time?

Mar 15, 2006 · Replies 2 · Mar 17, 2006

Replies: 2

Views: 2K

Undergrad Life on Europa? Complex or Simple?

Mar 13, 2006 · Replies 2 · Mar 16, 2006

Replies: 2

Views: 3K

Graduate Nuclear reactions in AGN accretion disk

Mar 13, 2006 · Replies 2 · Mar 16, 2006

Replies: 2

Views: 4K

High School Farthest Visible Star: Distance & Observation

Mar 12, 2006 · Replies 18 · Mar 16, 2006

Replies: 18

Views: 23K

Graduate Dark matter candidates, what chances would you give them?

Mar 6, 2006 · Replies 76 · Mar 16, 2006

3

Replies: 76

Views: 10K

Graduate Is the Universe's Expansion Due to a Hidden Spin?

Mar 12, 2006 · Replies 2 · Mar 16, 2006

Replies: 2

Views: 3K

Graduate Universe Expansion: Future of Dark Skies?

Jan 12, 2006 · Replies 17 · Mar 15, 2006

Replies: 17

Views: 5K

Graduate Loop Quantum Cosmology dual to Randall-Sundrum Model

Mar 15, 2006 · Replies 1 · Mar 15, 2006

Replies: 1

Views: 4K

Graduate Is Anything Ever Truly Stationary? A Theoretical Exploration

Mar 11, 2006 · Replies 8 · Mar 14, 2006

Replies: 8

Views: 3K

Undergrad Do All Spiral Galaxies Rotate in the Same Direction from Earth's Perspective?

Mar 9, 2006 · Replies 6 · Mar 14, 2006

Replies: 6

Views: 6K

Graduate What is the Anomaly with Sirius B's Data in Astrophysics Calculations?

Mar 6, 2006 · Replies 7 · Mar 14, 2006

Replies: 7

Views: 6K

High School What is the difference between a nova and a super nova?

Mar 13, 2006 · Replies 1 · Mar 14, 2006

Replies: 1

Views: 4K

High School How Can I Determine Current Planetary Velocities?

Mar 13, 2006 · Replies 4 · Mar 13, 2006

Replies: 4

Views: 11K

High School The most intnse solar strom in 50 years

Mar 13, 2006 · Replies 5 · Mar 13, 2006

Replies: 5

Views: 3K

Undergrad Galactic Frequencies: Info on Frequency of Galaxies

Mar 12, 2006 · Replies 7 · Mar 13, 2006

Replies: 7

Views: 2K

Undergrad The Speed of Change: Centripetal Force

Mar 7, 2006 · Replies 4 · Mar 13, 2006

Replies: 4

Views: 3K

Graduate Tully-Fisher, fundamental plane - what about LSBs, dwarfs, etc?

Mar 6, 2006 · Replies 11 · Mar 12, 2006

Replies: 11

Views: 4K

Question for astronomers, astrphys.

Mar 12, 2006 · Replies 2 · Mar 12, 2006

Replies: 2

Views: 2K

Graduate The Search for the Perfect Solar Twin: HD 98618

Mar 10, 2006 · Replies 2 · Mar 12, 2006

Replies: 2

Views: 2K

Graduate The view from a ring singularity?

Feb 2, 2006 · Replies 9 · Mar 12, 2006

Replies: 9

Views: 4K

Undergrad Why are Globular Clusters so Metal poor?

Feb 26, 2006 · Replies 14 · Mar 12, 2006

Replies: 14

Views: 6K

Undergrad What force is stronger, Gravity or Magnetism?

Mar 2, 2006 · Replies 6 · Mar 12, 2006

Replies: 6

Views: 12K

Graduate Big Bang: EXPLOSION OF A SUPER MASSIVE B.H

Mar 8, 2006 · Replies 10 · Mar 12, 2006

Replies: 10

Views: 4K

Undergrad Galactic Merger: What Will Happen When Andromeda Collides with the Milky Way?

Jan 23, 2006 · Replies 2 · Mar 11, 2006

Replies: 2

Views: 3K

High School What made the scientists to think about Antimatter

Mar 11, 2006 · Replies 3 · Mar 11, 2006

Replies: 3

Views: 2K

Water found somewhere beyond Earth

Mar 9, 2006 · Replies 5 · Mar 10, 2006

Replies: 5

Views: 3K

Graduate Calculating Bolometric Correction for Cepheid Variables

Mar 10, 2006 · Replies 4 · Mar 10, 2006

Replies: 4

Views: 7K

Graduate Population III detected at last?

Mar 9, 2006 · Replies 5 · Mar 10, 2006

Replies: 5

Views: 3K

Graduate What is Dark Energy and Why is it a Mystery?

Mar 7, 2006 · Replies 5 · Mar 9, 2006

Replies: 5

Views: 3K

Graduate Watch out, n00b about Black Holes Question.

Mar 7, 2006 · Replies 3 · Mar 8, 2006

Replies: 3

Views: 2K

Study proves universe created by committee

Mar 7, 2006 · Replies 6 · Mar 8, 2006

Replies: 6

Views: 3K

High School Are cosmic rays considered part of the EMS?

Mar 6, 2006 · Replies 3 · Mar 7, 2006

Replies: 3

Views: 5K

What is the Symbol for "Section"?

Mar 6, 2006 · Replies 6 · Mar 7, 2006

Replies: 6

Views: 66K

Undergrad Light in Astronomy - Properties & Uses in Observing Objects

Mar 3, 2006 · Replies 3 · Mar 6, 2006

Replies: 3

Views: 3K

Graduate Stephan's Quintet: Spitzer Telescope Views Galaxy Cluster Shock Wave

Mar 5, 2006 · Replies 7 · Mar 6, 2006

Replies: 7

Views: 2K

Graduate What is Information Theoretic Process Physics and its implications?

Feb 4, 2006 · Replies 2 · Mar 5, 2006

Replies: 2

Views: 4K

Undergrad Solar celestial position (as function of latt, long, time of day, date, )

Feb 25, 2006 · Replies 6 · Mar 5, 2006

Replies: 6

Views: 5K

Undergrad How to Calculate the Angle Between Two Celestial Objects?

Mar 2, 2006 · Replies 2 · Mar 5, 2006

Replies: 2

Views: 4K

Graduate Effects of plasma on friedman/fluid/acceleration equations

Mar 1, 2006 · Replies 3 · Mar 5, 2006

Replies: 3

Views: 4K

Graduate Is the Universe Losing Energy Due to the Exchange of Photons?

Mar 2, 2006 · Replies 4 · Mar 5, 2006

Replies: 4

Views: 7K

Graduate How Can Black Holes Defy Einstein's Theory of Gravity?

Mar 4, 2006 · Replies 2 · Mar 4, 2006

Replies: 2

Views: 4K

Graduate Time Dilation and Black Hole Inflation

Feb 24, 2006 · Replies 10 · Mar 4, 2006

Replies: 10

Views: 11K

Undergrad Age of The Universe - Time vs Space

Feb 22, 2006 · Replies 8 · Mar 4, 2006

Replies: 8

Views: 5K

When Were Stars Discovered and How Are They Catalogued?

Mar 3, 2006 · Replies 2 · Mar 3, 2006

Replies: 2

Views: 2K

What are some resources for obtaining Mercator projections of Mars?

Feb 10, 2006 · Replies 3 · Mar 2, 2006

Replies: 3

Views: 3K

High School Mission To Pluto Uses Jupiter To Speed Up?

Jan 21, 2006 · Replies 21 · Mar 2, 2006

Replies: 21

Views: 5K

High School Hubble discovers two new satellites of Pluto

Oct 31, 2005 · Replies 12 · Mar 2, 2006

Replies: 12

Views: 32K

Graduate Dark matter properties detected using VLT

Feb 27, 2006 · Replies 5 · Mar 2, 2006

Replies: 5

Views: 3K

Graduate Major Access = Averate Distance over Eccentric Anomaly

Feb 28, 2006 · Replies 1 · Feb 28, 2006

Replies: 1

Views: 3K

Undergrad What is a Plummer Sphere Exactly?

Feb 26, 2006 · Replies 3 · Feb 27, 2006

Replies: 3

Views: 11K

Graduate No Dark Energy? New Puzzling Discovery

Feb 7, 2006 · Replies 37 · Feb 25, 2006

2

Replies: 37

Views: 7K

Graduate Revisiting Dark Matter Estimates in Axially Symmetric Galaxies

Feb 24, 2006 · Replies 2 · Feb 25, 2006

Replies: 2

Views: 3K

Graduate Plasma-Redshift Cosmology: Fits to SNLS Data & Implications

Feb 24, 2006 · Replies 5 · Feb 25, 2006

Replies: 5

Views: 4K

Undergrad Questions of a Newbie: Iron Cores in Stars and Planets

Feb 22, 2006 · Replies 4 · Feb 24, 2006

Replies: 4

Views: 3K

High School Lightening on Mars? - Does Mars Have "Dusty Thunderstorms"?

Feb 22, 2006 · Replies 7 · Feb 24, 2006

Replies: 7

Views: 3K

Stargazing Can I Take Photos of Saturn and Galaxies with My Meade ETX70 Telescope?

Feb 12, 2006 · Replies 9 · Feb 24, 2006

Replies: 9

Views: 10K

Graduate Measuring Vorticity in a Rotating Anisotropic Universe

Feb 20, 2006 · Replies 6 · Feb 23, 2006

Replies: 6

Views: 4K

Undergrad Computer Science in Astronomy: Essential Skills and Applications?

Feb 21, 2006 · Replies 3 · Feb 23, 2006

Replies: 3

Views: 4K

Graduate Fine-Tuning from First Principles don't laugh

Feb 21, 2006 · Replies 1 · Feb 21, 2006

Replies: 1

Views: 2K

Major Scientific Discovery - Extrasolar planet announcement 25 Jan 18:00 GMT

Jan 25, 2006 · Replies 7 · Feb 21, 2006

Replies: 7

Views: 4K

High School Why Do Hubble Photos Have Black Squares?

Feb 15, 2006 · Replies 5 · Feb 19, 2006

Replies: 5

Views: 6K

What's the Latest on Space Elevators?

Feb 15, 2006 · Replies 18 · Feb 18, 2006

Replies: 18

Views: 6K

Undergrad Venus Synodic Period: Why 72 Degrees Away?

Feb 16, 2006 · Replies 1 · Feb 16, 2006

Replies: 1

Views: 9K

Graduate Some questions on star evolution

Feb 14, 2006 · Replies 1 · Feb 16, 2006

Replies: 1

Views: 3K

Astro Phys: Bridging the Gap Between the Man in the Street & Astronomy

Feb 14, 2006 · Replies 3 · Feb 16, 2006

Replies: 3

Views: 3K

Astrophysical Experiments Under Threat: Funding Cuts Ahead?

Feb 15, 2006 · Replies 2 · Feb 15, 2006

Replies: 2

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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