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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 Measuring Rotational Speed of Io w/Doppler & Relative Velocity to Jupiter

Mar 9, 2005 · Replies 1 · Mar 9, 2005

Replies: 1

Views: 2K

Graduate A search for traces of cosmic string didnt find much

Mar 7, 2005 · Replies 10 · Mar 9, 2005

Replies: 10

Views: 3K

Graduate Gravity Leak: Testing the Theory w/ Earth-Moon Mirrors

Mar 1, 2005 · Replies 9 · Mar 8, 2005

Replies: 9

Views: 3K

Graduate Difference between flare, CME and SPEs

Jan 26, 2005 · Replies 3 · Mar 8, 2005

Replies: 3

Views: 7K

Graduate What is the connection between dark energy and dark matter?

Mar 7, 2005 · Replies 3 · Mar 7, 2005

Replies: 3

Views: 3K

High School Astronomy is the oldest of the physical sciences

Mar 5, 2005 · Replies 4 · Mar 7, 2005

Replies: 4

Views: 8K

Graduate What does it mean for the universe to be "flat"?

Mar 6, 2005 · Replies 2 · Mar 7, 2005

Replies: 2

Views: 3K

SciAm Lineweaver cosmology article, March issue

Mar 6, 2005 · Replies 5 · Mar 7, 2005

Replies: 5

Views: 3K

Graduate Do 3D and 4D Universes Share the Same Geometry?

Mar 5, 2005 · Replies 3 · Mar 7, 2005

Replies: 3

Views: 4K

Graduate How Do Scientists Determine Exoplanet Characteristics from Radial Velocity Data?

Feb 24, 2005 · Replies 13 · Mar 6, 2005

Replies: 13

Views: 3K

Graduate What is the upper and lower bound for reionization?

Mar 5, 2005 · Replies 16 · Mar 6, 2005

Replies: 16

Views: 3K

Graduate Several moons in the Saturn system

Feb 24, 2005 · Replies 6 · Mar 5, 2005

Replies: 6

Views: 3K

Graduate Local Pristine Primordial Material

Mar 4, 2005 · Replies 12 · Mar 5, 2005

Replies: 12

Views: 3K

Undergrad Blackbody Radiation: Temperature of Accreted Gas

Feb 28, 2005 · Replies 7 · Mar 4, 2005

Replies: 7

Views: 4K

Undergrad Will an Astronaut Float at the Positional Median Between Earth and Moon?

Mar 3, 2005 · Replies 3 · Mar 4, 2005

Replies: 3

Views: 14K

Graduate How do Gravitons escape from a Black Hole?

Mar 2, 2005 · Replies 11 · Mar 4, 2005

Replies: 11

Views: 12K

Graduate 9 Billion-Year-Old Galaxy Discovered

Mar 3, 2005 · Replies 4 · Mar 3, 2005

Replies: 4

Views: 4K

Will NASA's Future Missions Be Impacted by Funding Challenges?

Mar 2, 2005 · Replies 2 · Mar 3, 2005

Replies: 2

Views: 2K

Stargazing Long-exposure mod for the quickcam

Dec 19, 2004 · Replies 12 · Mar 2, 2005

Replies: 12

Views: 2K

Undergrad Can Black Holes Alter the Movement of the Universe Through Light Bending?

Jan 12, 2005 · Replies 13 · Mar 2, 2005

Replies: 13

Views: 3K

Graduate Why is our galaxy's dark matter distribution non-spherical?

Mar 2, 2005 · Replies 4 · Mar 2, 2005

Replies: 4

Views: 3K

High School Brightest Explosion Ever Observed

Feb 19, 2005 · Replies 10 · Mar 2, 2005

Replies: 10

Views: 3K

What color would the end star be if a red star and a blue star collided?

Mar 2, 2005 · Replies 3 · Mar 2, 2005

Replies: 3

Views: 4K

High School How is the Distance Between Stars Measured?

Mar 2, 2005 · Replies 1 · Mar 2, 2005

Replies: 1

Views: 6K

Undergrad Why Do Globular Clusters Maintain Their Shape Over Billions of Years?

Mar 2, 2005 · Replies 2 · Mar 2, 2005

Replies: 2

Views: 2K

Graduate Initial condition of the restricted problem of three bodies

Feb 26, 2005 · Replies 11 · Mar 2, 2005

Replies: 11

Views: 3K

Graduate Do Black Holes and the Big Bang Singularity Reflect Maximum Entropy?

Jan 8, 2005 · Replies 5 · Mar 2, 2005

Replies: 5

Views: 2K

Graduate Weyl Curvature Hypothesis and entropy

Oct 16, 2004 · Replies 18 · Mar 2, 2005

Replies: 18

Views: 8K

Graduate What is the significance of the recently discovered nearby newborn galaxies?

Mar 1, 2005 · Replies 2 · Mar 2, 2005

Replies: 2

Views: 2K

Undergrad How Can You Measure Star Distances Using Ancient Astronomical Techniques?

Mar 1, 2005 · Replies 6 · Mar 2, 2005

Replies: 6

Views: 3K

Graduate Higgs ocean, dark energy and quantum fluctuations: related manifestations?

Feb 28, 2005 · Replies 5 · Mar 1, 2005

Replies: 5

Views: 3K

Graduate Calculating Total Energy of a Planet Orbiting a Star: A Simple Guide

Feb 28, 2005 · Replies 11 · Mar 1, 2005

Replies: 11

Views: 3K

Undergrad Turning Matter into Energy and Back: Is It Possible?

Jan 31, 2005 · Replies 14 · Mar 1, 2005

Replies: 14

Views: 3K

Graduate Could Other Universes Fine-Tune Their Own Inhabitants?

Feb 28, 2005 · Replies 3 · Mar 1, 2005

Replies: 3

Views: 3K

Graduate What is the latest research on CMB anisotropy and its implications?

Mar 1, 2005 · Replies 2 · Mar 1, 2005

Replies: 2

Views: 2K

Cosmology: Sales Pitch or Science?

Feb 22, 2005 · Replies 5 · Mar 1, 2005

Replies: 5

Views: 6K

Graduate Crisis in Cosmology: CCC-I Conference Challenges Observations

Mar 1, 2005 · Replies 1 · Mar 1, 2005

Replies: 1

Views: 2K

Send Your Name to Pluto | Join NASA's Latest PR Idea and Make History!

Feb 27, 2005 · Replies 4 · Mar 1, 2005

Replies: 4

Views: 4K

Graduate Cyclical Universe: Spontaneous Inflation & Time's Arrow

Feb 23, 2005 · Replies 8 · Feb 28, 2005

Replies: 8

Views: 3K

Undergrad Is there a maximum mass limit for stars in the universe?

Feb 27, 2005 · Replies 4 · Feb 28, 2005

Replies: 4

Views: 10K

Graduate Shape of the Universe: Interaction of Forces & Evolution

Feb 25, 2005 · Replies 9 · Feb 27, 2005

Replies: 9

Views: 3K

Undergrad Can we please look for 'New Earth' at Alpha Centauri?

Feb 26, 2005 · Replies 3 · Feb 27, 2005

Replies: 3

Views: 4K

Graduate Black holes bend light the wrong way

Feb 24, 2005 · Replies 6 · Feb 27, 2005

Replies: 6

Views: 3K

Undergrad Calculating the Centre of Mass in a 2-Body System

Feb 26, 2005 · Replies 1 · Feb 26, 2005

Replies: 1

Views: 3K

Can the Moon's rotation be affected by Earth's tides?

Feb 25, 2005 · Replies 5 · Feb 26, 2005

Replies: 5

Views: 8K

Graduate New MOND Papers: Jacob Bekenstein’s TeVeS Breakthrough

Feb 23, 2005 · Replies 3 · Feb 25, 2005

Replies: 3

Views: 5K

Interstellar propulsion island hopping the Oort cloud

Feb 25, 2005 · Replies 2 · Feb 25, 2005

Replies: 2

Views: 3K

High School Moons with Moons: Solar System Possiblities

Feb 7, 2005 · Replies 9 · Feb 25, 2005

Replies: 9

Views: 4K

Graduate Why are the theoretical and measured sizes/ages of the universe so similar?

Feb 24, 2005 · Replies 14 · Feb 25, 2005

Replies: 14

Views: 3K

Graduate Help with Orbit Sim: 2-Body Anomalous Motion Problem

Feb 24, 2005 · Replies 2 · Feb 24, 2005

Replies: 2

Views: 3K

Graduate Unveiling the Mysteries of Gravity Waves: Origins and Properties Explained"

Feb 20, 2005 · Replies 11 · Feb 24, 2005

Replies: 11

Views: 6K

Undergrad A body intermediate to stars and galaxies

Feb 20, 2005 · Replies 3 · Feb 24, 2005

Replies: 3

Views: 2K

High School Boarder of Universe: What Makes It & Can It Change?

Feb 10, 2005 · Replies 30 · Feb 24, 2005

2

Replies: 30

Views: 5K

Undergrad How is exoplanet mass found by astrometry?

Feb 23, 2005 · Replies 10 · Feb 23, 2005

Replies: 10

Views: 5K

Graduate Accelerated expansion: is the jury still out?

Feb 21, 2005 · Replies 3 · Feb 22, 2005

Replies: 3

Views: 3K

High School Astronomy & Cosmology: What's the Difference?

Feb 22, 2005 · Replies 2 · Feb 22, 2005

Replies: 2

Views: 4K

Graduate Solving the Energy Crisis on a Methane-Rich Planet

Feb 12, 2005 · Replies 5 · Feb 22, 2005

Replies: 5

Views: 3K

Graduate Is There a Significant Shift in the Triple-Alpha Process?

Jan 15, 2005 · Replies 5 · Feb 20, 2005

Replies: 5

Views: 3K

Graduate Cosmological Principle: Finite or Finiteless Universe?

Feb 19, 2005 · Replies 4 · Feb 20, 2005

Replies: 4

Views: 3K

Undergrad Let's think crack u'r brain with this qn.

Feb 19, 2005 · Replies 1 · Feb 19, 2005

Replies: 1

Views: 2K

Undergrad Is the Andromeda Galaxy going to collide with the Milky Way?

Feb 17, 2005 · Replies 9 · Feb 18, 2005

Replies: 9

Views: 8K

Graduate Could S Meson Explain Dark Matter?

Feb 18, 2005 · Replies 1 · Feb 18, 2005

Replies: 1

Views: 3K

High School Unraveling the Mystery of Pluto: 75 Years Since Its Discovery and Counting

Feb 14, 2005 · Replies 5 · Feb 18, 2005

Replies: 5

Views: 3K

Graduate Average luminosity of night sky vs frequency

Feb 14, 2005 · Replies 5 · Feb 17, 2005

Replies: 5

Views: 3K

High School How much radiation comes in contact with the martian surface?

Feb 15, 2005 · Replies 2 · Feb 17, 2005

Replies: 2

Views: 3K

Graduate Is the Pioneer Anomaly Explained by Topological Phase Defects of Light?

Feb 17, 2005 · Replies 1 · Feb 17, 2005

Replies: 1

Views: 3K

Undergrad Is There Evidence of Life on Mars?

Feb 16, 2005 · Replies 3 · Feb 17, 2005

Replies: 3

Views: 4K

Graduate Over density of galaxies at z=5.9

Feb 11, 2005 · Replies 18 · Feb 16, 2005

Replies: 18

Views: 4K

Graduate Why Does the Solar System's Angular Momentum Distribution Appear Anomalous?

Jan 21, 2005 · Replies 1 · Feb 13, 2005

Replies: 1

Views: 3K

Have Scientists Discovered the Smallest Exoplanet Yet?

Feb 11, 2005 · Replies 2 · Feb 13, 2005

Replies: 2

Views: 3K

Graduate What is the significance of being in the eigenspace of Christ?

Jan 28, 2005 · Replies 8 · Feb 13, 2005

Replies: 8

Views: 3K

Habitable Star Systems: Where Can We Find Maggie Turnbull's Catalogue?

Feb 11, 2005 · Replies 1 · Feb 13, 2005

Replies: 1

Views: 3K

Undergrad Help with planetary temp. equation

Feb 11, 2005 · Replies 7 · Feb 13, 2005

Replies: 7

Views: 3K

Graduate A Universe That Is More Life-Producing?

Feb 8, 2005 · Replies 16 · Feb 12, 2005

Replies: 16

Views: 4K

Twisted Meteor Train - A Sight to Behold

Feb 12, 2005 · Replies 1 · Feb 12, 2005

Replies: 1

Views: 3K

Undergrad Finding a Formula for Determining G Forces in Space Travel

Jan 22, 2005 · Replies 12 · Feb 11, 2005

Replies: 12

Views: 6K

Graduate Can We Talk of Points of Space?

Jan 18, 2005 · Replies 10 · Feb 11, 2005

Replies: 10

Views: 2K

High School 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

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

Feb 8, 2005 · Replies 3 · Feb 9, 2005

Replies: 3

Views: 2K

High School How Can Light Exist When Time is Stopped?

Feb 9, 2005 · Replies 5 · Feb 9, 2005

Replies: 5

Views: 2K

Graduate Does an infinite universe always repeat its parts?

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

Replies: 15

Views: 4K

Graduate Infinite Universe Energy: CMBR Impact?

Feb 9, 2005 · Replies 1 · Feb 9, 2005

Replies: 1

Views: 2K

Graduate 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

Undergrad How Is Dark Matter So Hot Yet Invisible?

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

Replies: 10

Views: 3K

Graduate Origin of Matter in Universe: Survey & Questions

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

Replies: 7

Views: 3K

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

Feb 4, 2005 · Replies 5 · Feb 7, 2005

Replies: 5

Views: 2K

Undergrad The Big Splat: Origin of Our Moon

Feb 4, 2005 · Replies 3 · Feb 6, 2005

Replies: 3

Views: 5K

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

Feb 5, 2005 · Replies 3 · Feb 6, 2005

Replies: 3

Views: 5K

High School Calculate Sun Angle: Length of Object by Shadow

Feb 2, 2005 · Replies 7 · Feb 5, 2005

Replies: 7

Views: 13K

Graduate Is Science Fiction a Legitimate Source of Scientific Ideas?

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

Replies: 8

Views: 3K

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

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

Replies: 4

Views: 2K

Graduate 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

Graduate Hubbles's law and the Dark Energy Component

Feb 4, 2005 · Replies 4 · Feb 4, 2005

Replies: 4

Views: 3K

Undergrad ET Visitors: Scientists See High Likelihood

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

Replies: 22

Views: 4K

Graduate Solar super-sail could reach Mars in a month

Feb 1, 2005 · Replies 9 · Feb 4, 2005

Replies: 9

Views: 2K

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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