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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 Armchair Cosmology: Djorgovski & Williams Examine Virtual Observatories

Apr 4, 2005 · Replies 2 · Apr 5, 2005

Replies: 2

Views: 2K

Graduate Measuring Venus Perihelion: Challenges & Solutions

Mar 28, 2005 · Replies 5 · Apr 5, 2005

Replies: 5

Views: 9K

Graduate Which Fundamental Force Drives Inflation?

Apr 4, 2005 · Replies 6 · Apr 5, 2005

Replies: 6

Views: 2K

High School Solar Flares: Causes, Effects & Prevention

Apr 4, 2005 · Replies 3 · Apr 5, 2005

Replies: 3

Views: 4K

Is Our Solar System Unique or Just Run of the Mill?

Apr 2, 2005 · Replies 16 · Apr 4, 2005

Replies: 16

Views: 4K

Graduate Is There a Preferred Axis in the Cosmic Radiation Anisotropy?

Apr 1, 2005 · Replies 4 · Apr 4, 2005

Replies: 4

Views: 3K

Undergrad Interpreting Spectra for Jupiter's Rotational Speed

Apr 3, 2005 · Replies 5 · Apr 4, 2005

Replies: 5

Views: 4K

Graduate Newton's Equation: Applying to Earth-Moon-Sun System

Apr 4, 2005 · Replies 4 · Apr 4, 2005

Replies: 4

Views: 9K

Undergrad Is Hawking Right About Black Holes Not Being Black?

Mar 29, 2005 · Replies 22 · Apr 4, 2005

Replies: 22

Views: 4K

Undergrad Is Space Time Only Relevant in Space?

Mar 31, 2005 · Replies 23 · Apr 4, 2005

Replies: 23

Views: 4K

High School What is the cutoff speed-of-sound for humans to distinguish direction in water?

Mar 24, 2005 · Replies 70 · Apr 4, 2005

3

Replies: 70

Views: 9K

Graduate Why Do Hot Jupiters Exist and Not Other Planetary Configurations?

Apr 3, 2005 · Replies 12 · Apr 3, 2005

Replies: 12

Views: 3K

Graduate Can Mass Exist in a Singularity?

Feb 26, 2005 · Replies 49 · Apr 3, 2005

2

Replies: 49

Views: 8K

High School How does light interact with objects?

Apr 1, 2005 · Replies 20 · Apr 3, 2005

Replies: 20

Views: 4K

Graduate Question: How do universes reproduce and pass on their physical constants?

Mar 31, 2005 · Replies 14 · Apr 2, 2005

Replies: 14

Views: 3K

Does Mars have it's own calendar yet?

Mar 26, 2005 · Replies 17 · Apr 2, 2005

Replies: 17

Views: 9K

Graduate Is the Friedmann Equation Failing at Late Times?

Apr 1, 2005 · Replies 3 · Apr 2, 2005

Replies: 3

Views: 2K

Graduate Are We Missing Earth-Like Planets Due to Orbital Orientation?

Mar 22, 2005 · Replies 11 · Apr 2, 2005

Replies: 11

Views: 6K

Graduate First Stars - How big - Now Black Holes?

Mar 17, 2005 · Replies 55 · Apr 2, 2005

2

Replies: 55

Views: 8K

Undergrad Understanding Gravitation: The Relationship Between Earth and Moon

Apr 2, 2005 · Replies 3 · Apr 2, 2005

Replies: 3

Views: 3K

Graduate Is the Matter-Antimatter Imbalance in Our Universe Just a Simple Anomaly?

Mar 14, 2005 · Replies 12 · Apr 2, 2005

Replies: 12

Views: 4K

Undergrad The most complex extraterrestrial molecule

Apr 1, 2005 · Replies 1 · Apr 1, 2005

Replies: 1

Views: 3K

Graduate Expanding Universe: Is everything really getting bigger?

Mar 24, 2005 · Replies 58 · Apr 1, 2005

2

Replies: 58

Views: 8K

Graduate Oort Cloud Treat to Interstellar Space Travel

Mar 21, 2005 · Replies 3 · Mar 31, 2005

Replies: 3

Views: 6K

Graduate How to calculate age of universe with a certain redshift?

Mar 30, 2005 · Replies 16 · Mar 31, 2005

Replies: 16

Views: 36K

Graduate What If: Gravity Changed When Universe Laws Tweaked?

Mar 30, 2005 · Replies 2 · Mar 30, 2005

Replies: 2

Views: 2K

Undergrad Astrophysics Scientific Research

Mar 16, 2005 · Replies 7 · Mar 30, 2005

Replies: 7

Views: 3K

High School Electric Planet? Is It Possible?

Mar 28, 2005 · Replies 3 · Mar 29, 2005

Replies: 3

Views: 2K

Graduate Can We Detect WIMPs and Axions on Earth?

Mar 29, 2005 · Replies 4 · Mar 29, 2005

Replies: 4

Views: 2K

High School Need Term for a Star and Its Associated Bodies

Mar 22, 2005 · Replies 6 · Mar 28, 2005

Replies: 6

Views: 2K

Stargazing How to Design a Simple Telescope?

Mar 27, 2005 · Replies 4 · Mar 28, 2005

Replies: 4

Views: 3K

Graduate New overview of cosmology for Ashtekar's book

Mar 27, 2005 · Replies 3 · Mar 28, 2005

Replies: 3

Views: 3K

High School Are Solar Systems Common in the Universe?

Mar 27, 2005 · Replies 4 · Mar 28, 2005

Replies: 4

Views: 4K

Undergrad What Happens to Matter and Energy at the End of the Universe?

Mar 15, 2005 · Replies 56 · Mar 28, 2005

2

Replies: 56

Views: 11K

Undergrad Atmospheric Pressure determined by?

Mar 26, 2005 · Replies 1 · Mar 27, 2005

Replies: 1

Views: 6K

Stargazing Building a DIY Radio Telescope: Worth the Time and Effort?

Feb 20, 2005 · Replies 4 · Mar 27, 2005

Replies: 4

Views: 4K

High School The age of the universe: easy question - hard answer

Feb 22, 2005 · Replies 69 · Mar 27, 2005

3

Replies: 69

Views: 11K

Undergrad What Are Common Misconceptions About the Big Bang?

Mar 3, 2005 · Replies 14 · Mar 27, 2005

Replies: 14

Views: 2K

Reach the End of Universe: Is There a Wall?

Mar 13, 2005 · Replies 30 · Mar 27, 2005

2

Replies: 30

Views: 10K

Undergrad What Is Needed To Make An Intelligent Species?

Feb 23, 2005 · Replies 72 · Mar 26, 2005

3

Replies: 72

Views: 11K

High School Your Definition Of An Earth-Like Planet?

Mar 26, 2005 · Replies 2 · Mar 26, 2005

Replies: 2

Views: 3K

Graduate Angular momentum of galaxy disks

Mar 22, 2005 · Replies 4 · Mar 26, 2005

Replies: 4

Views: 3K

Undergrad Is There an Unknown Source of Energy Contributing to Our Universe's Expansion?

Mar 24, 2005 · Replies 2 · Mar 26, 2005

Replies: 2

Views: 2K

Undergrad Would Different Laws Of Physics Affect Gravity?

Mar 22, 2005 · Replies 11 · Mar 26, 2005

Replies: 11

Views: 5K

Graduate Dark Matter & Energy/Mass of False Vacuum

Mar 20, 2005 · Replies 16 · Mar 25, 2005

Replies: 16

Views: 6K

Oh great, unmoderated alien communications

Mar 24, 2005 · Replies 4 · Mar 24, 2005

Replies: 4

Views: 2K

Undergrad What is the comet's speed at its perihelion

Mar 23, 2005 · Replies 2 · Mar 24, 2005

Replies: 2

Views: 6K

Graduate Is the Vacuum the Same as Quantum Foam?

Mar 22, 2005 · Replies 5 · Mar 23, 2005

Replies: 5

Views: 3K

Undergrad Explore the Mysteries of Neptune's Magnetic Field

Mar 17, 2005 · Replies 10 · Mar 23, 2005

Replies: 10

Views: 3K

Graduate How do we apply the Friedman solution to a fluid with constant pressure and energy density?

Mar 22, 2005 · Replies 7 · Mar 23, 2005

Replies: 7

Views: 2K

Undergrad Relation between Mass and distance between two objects

Mar 19, 2005 · Replies 6 · Mar 23, 2005

Replies: 6

Views: 18K

Undergrad Alternating planetary phase layers

Mar 21, 2005 · Replies 2 · Mar 23, 2005

Replies: 2

Views: 2K

Stargazing Are There Internet Based Telescopes Available for Public Use?

Mar 19, 2005 · Replies 5 · Mar 23, 2005

Replies: 5

Views: 4K

Is the 2nd Big Bang Theory Just Hype?

Mar 23, 2005 · Replies 2 · Mar 23, 2005

Replies: 2

Views: 2K

Graduate How Does Dark Matter Avoid Gravitational Collapse?

Mar 23, 2005 · Replies 2 · Mar 23, 2005

Replies: 2

Views: 3K

High School What Topics Can I Explore About Singularity for My Oral Presentation?

Mar 22, 2005 · Replies 4 · Mar 23, 2005

Replies: 4

Views: 5K

High School Astrophysics -What actually is this?

Jan 22, 2005 · Replies 7 · Mar 22, 2005

Replies: 7

Views: 7K

Graduate Measuring Io's Velocity Spectra: The Importance of Spectrometer Sensitivity

Mar 21, 2005 · Replies 2 · Mar 22, 2005

Replies: 2

Views: 3K

High School The Impact of a Moonless Earth: Effects on Tides and Beyond

Mar 20, 2005 · Replies 6 · Mar 21, 2005

Replies: 6

Views: 3K

Undergrad Is a Subspace Sphere Around a Star Plausible in TNG Season 6?

Mar 21, 2005 · Replies 1 · Mar 21, 2005

Replies: 1

Views: 3K

Space Love: A Comic for Astro Nerds!

Mar 18, 2005 · Replies 1 · Mar 18, 2005

Replies: 1

Views: 2K

Graduate More exoplanet equation problems :/

Mar 18, 2005 · Replies 4 · Mar 18, 2005

Replies: 4

Views: 3K

Graduate Lab Fireball at RHIC May Have Black Hole Characteristics

Mar 18, 2005 · Replies 5 · Mar 18, 2005

Replies: 5

Views: 3K

High School Is it safe to assume that Earth-like planets are the best

Mar 18, 2005 · Replies 9 · Mar 18, 2005

Replies: 9

Views: 3K

Has a Man-Made Black Hole Really Been Created?

Mar 18, 2005 · Replies 2 · Mar 18, 2005

Replies: 2

Views: 4K

Is NASA Shutting Down Long-Running Space Missions to Save Money?

Mar 16, 2005 · Replies 11 · Mar 17, 2005

Replies: 11

Views: 3K

Graduate Fusion Reactor: A Possible Solution to Generate Thermal Energy?

Mar 17, 2005 · Replies 6 · Mar 17, 2005

Replies: 6

Views: 3K

High School Relative Planet Distances: Find Date/Start/Destination Distances

Mar 14, 2005 · Replies 7 · Mar 17, 2005

Replies: 7

Views: 8K

Graduate What's the difference between a two sphere and a three sphere?

Mar 17, 2005 · Replies 1 · Mar 17, 2005

Replies: 1

Views: 3K

Graduate What is the theoretical limit on the mass of stars and has it been observed?

Mar 8, 2005 · Replies 14 · Mar 17, 2005

Replies: 14

Views: 4K

Graduate I saw an article in New Scientist re CBR

Mar 16, 2005 · Replies 1 · Mar 16, 2005

Replies: 1

Views: 3K

Undergrad Is Life Common and Resilient in the Universe?

Mar 12, 2005 · Replies 18 · Mar 16, 2005

Replies: 18

Views: 3K

Graduate What happens if you travel faster than the Speed of light

Mar 15, 2005 · Replies 3 · Mar 16, 2005

Replies: 3

Views: 3K

Graduate What Happened Before the First Planck Time?

Mar 16, 2005 · Replies 2 · Mar 16, 2005

Replies: 2

Views: 3K

Graduate Dark energy = dark matter*speed of light squared?

Mar 12, 2005 · Replies 14 · Mar 16, 2005

Replies: 14

Views: 16K

Graduate Is the Theory of Gravitational Waves Dead if Advanced LIGO Fails to Detect Them?

Mar 15, 2005 · Replies 10 · Mar 16, 2005

Replies: 10

Views: 3K

High School Earth's Orbit: Why Is It Not Circular?

Mar 15, 2005 · Replies 5 · Mar 16, 2005

Replies: 5

Views: 4K

Graduate Galaxies Accelerating at End of Universe: Big Bang Theory Wrong?

Mar 9, 2005 · Replies 5 · Mar 16, 2005

Replies: 5

Views: 3K

Graduate Can we calculate the Schwarzschild radius of an object without knowing its mass?

Mar 12, 2005 · Replies 5 · Mar 15, 2005

Replies: 5

Views: 3K

Graduate Which textbook is best for studying gravitation and cosmology?

Mar 14, 2005 · Replies 4 · Mar 15, 2005

Replies: 4

Views: 2K

Undergrad What happends to light before it reaches us?

Mar 14, 2005 · Replies 3 · Mar 14, 2005

Replies: 3

Views: 4K

Graduate Exoplanet Dynamics: Investigating Planet Migration

Mar 13, 2005 · Replies 7 · Mar 14, 2005

Replies: 7

Views: 3K

Graduate What exactly is it being bent by gravity?

Mar 13, 2005 · Replies 6 · Mar 14, 2005

Replies: 6

Views: 4K

Graduate Where did the energy in the CMB go to?

Mar 2, 2005 · Replies 65 · Mar 14, 2005

3

Replies: 65

Views: 13K

Graduate Can Cosmic Inflation Explain the Accelerating Universe?

Mar 13, 2005 · Replies 2 · Mar 14, 2005

Replies: 2

Views: 3K

Undergrad What Is the Difference Between Flux and Intensity in Astronomy?

Mar 13, 2005 · Replies 1 · Mar 13, 2005

Replies: 1

Views: 23K

Graduate Starless Galaxies: BBC Report on Dark Matter Discovery

Feb 23, 2005 · Replies 33 · Mar 13, 2005

2

Replies: 33

Views: 7K

Graduate Flatness Problem: Understanding Resolution in Big Bang Model

Mar 13, 2005 · Replies 5 · Mar 13, 2005

Replies: 5

Views: 3K

Undergrad Satellite Orbit: Effects of Rocket Thrusts

Nov 6, 2004 · Replies 13 · Mar 13, 2005

Replies: 13

Views: 6K

Graduate CCC-I: Challenging Observations & New Picture of the Universe

Feb 18, 2005 · Replies 60 · Mar 12, 2005

3

Replies: 60

Views: 10K

Graduate How did globular clusters get their properties?

Mar 10, 2005 · Replies 6 · Mar 12, 2005

Replies: 6

Views: 3K

Graduate VIRGOHI21 & MOND: A New Challenge?

Mar 6, 2005 · Replies 6 · Mar 12, 2005

Replies: 6

Views: 3K

Graduate Dark matter galaxies, stars and planetoids

Mar 10, 2005 · Replies 8 · Mar 11, 2005

Replies: 8

Views: 4K

High School What Lies Beyond the Edge of the Universe?

Mar 8, 2005 · Replies 16 · Mar 11, 2005

Replies: 16

Views: 7K

Graduate Hawking Radiation – Empty space virtual antiparticle-particle pairs

Mar 11, 2005 · Replies 1 · Mar 11, 2005

Replies: 1

Views: 6K

Undergrad Questions for a college student in astro.

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

Replies: 4

Views: 3K

Graduate Unreasonable aim of the Creator?

Mar 8, 2005 · Replies 5 · Mar 11, 2005

Replies: 5

Views: 2K

Graduate What happens to matter that falls into a black hole?

Mar 10, 2005 · Replies 2 · Mar 10, 2005

Replies: 2

Views: 5K

Undergrad Are there still stars being discovered?

Mar 10, 2005 · Replies 1 · Mar 10, 2005

Replies: 1

Views: 2K

Undergrad Online undergraduate reading resource for Astrophysics request

Mar 9, 2005 · Replies 3 · Mar 10, 2005

Replies: 3

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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