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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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Stargazing Stuck 100 miles from today's partial solar eclipse

Andromeda321
Apr 8, 2005 · Replies 1 · Apr 9, 2005

Replies: 1

High School How does distance from the sun affect the apparent brightness?

Mariko
Apr 8, 2005 · Replies 8 · Apr 9, 2005

Replies: 8

Undergrad Clay-like Material: From Soft to Hard in Space and Earth

dbstpdud12
Apr 8, 2005 · Replies 1 · Apr 8, 2005

Replies: 1

Graduate Does the big bang imply a finite universe

Allday
Mar 23, 2005 · Replies 47 · Apr 8, 2005

2

Replies: 47

Graduate Are there white holes that pump matter into Universe?

spicerack
Mar 27, 2005 · Replies 20 · Apr 8, 2005

Replies: 20

Graduate Shape of the Universe: Flat or Curved?

moonman
Apr 7, 2005 · Replies 1 · Apr 8, 2005

Replies: 1

Graduate Why is it difficult to measure the perihelion advance of Venus?

kiwikiwi79
Mar 28, 2005 · Replies 7 · Apr 8, 2005

Replies: 7

Graduate Are Magnetic Anomalies the Cause of Black Hole Eruptions?

wolram
Apr 7, 2005 · Replies 5 · Apr 7, 2005

Replies: 5

Graduate The Hubble Length and Mass of the Universe

Ian
Mar 26, 2005 · Replies 21 · Apr 7, 2005

Replies: 21

Graduate Habitability of Earth-like exoplanets

Ivan Seeking
Apr 6, 2005 · Replies 16 · Apr 6, 2005

Replies: 16

Graduate Habitable Worlds circling non-Sol like stars

The Rev
Apr 6, 2005 · Replies 3 · Apr 6, 2005

Replies: 3

Undergrad Why is the moon moving away from Earth and will it escape?

mee
Apr 6, 2005 · Replies 1 · Apr 6, 2005

Replies: 1

Graduate Disk scale length values too high in galaxy luminosity profiles

SplinterIon
Apr 5, 2005 · Replies 3 · Apr 6, 2005

Replies: 3

Stargazing Can You Find a Quality Telescope for Under $100?

Someone502
Apr 4, 2005 · Replies 5 · Apr 5, 2005

Replies: 5

Undergrad Exo-Planets: 70% Eccentric Orbits - Does It Imply Rare Solar System?

Gold Barz
Apr 5, 2005 · Replies 2 · Apr 5, 2005

Replies: 2

Graduate Is an old quasar incompatible with a young dark energy-dominated universe?

Garth
Apr 4, 2005 · Replies 6 · Apr 5, 2005

Replies: 6

Graduate Neutron stars: good short article

marcus
Apr 3, 2005 · Replies 4 · Apr 5, 2005

Replies: 4

Graduate Proving the Expansion of the Universe

cosmoboy
Apr 4, 2005 · Replies 12 · Apr 5, 2005

Replies: 12

Graduate Magnetic fields and inter stella medium

wolram
Apr 4, 2005 · Replies 5 · Apr 5, 2005

Replies: 5

Graduate Virtual observatories and armchair cosmology

Chronos
Apr 4, 2005 · Replies 2 · Apr 5, 2005

Replies: 2

Graduate Measuring Venus Perihelion: Challenges & Solutions

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

Replies: 5

Graduate Which Fundamental Force Drives Inflation?

briandunning
Apr 4, 2005 · Replies 6 · Apr 5, 2005

Replies: 6

High School How do solar flares affect Earth's communications and climate?

Reshma
Apr 4, 2005 · Replies 3 · Apr 5, 2005

Replies: 3

Is our solar system unique or typical among exoplanetary systems?

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

Replies: 16

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

wolram
Apr 1, 2005 · Replies 4 · Apr 4, 2005

Replies: 4

Undergrad Interpreting Spectra for Jupiter's Rotational Speed

Link
Apr 3, 2005 · Replies 5 · Apr 4, 2005

Replies: 5

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

ammann
Apr 4, 2005 · Replies 4 · Apr 4, 2005

Replies: 4

Undergrad Is Hawking Right About Black Holes Not Being Black?

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

Replies: 22

Undergrad Is Space Time Only Relevant in Space?

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

Replies: 23

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

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

3

Replies: 70

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

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

Replies: 12

Graduate Can Mass Exist in a Singularity?

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

2

Replies: 49

High School What does our galaxy orbit?

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

Replies: 20

Graduate Do physical laws determine the constants of nature?

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

Replies: 14

Does Mars have it's own calendar yet?

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

Replies: 17

Graduate Is the Friedmann Equation Failing at Late Times?

wolram
Apr 1, 2005 · Replies 3 · Apr 2, 2005

Replies: 3

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

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

Replies: 11

Graduate First Stars - How big - Now Black Holes?

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

2

Replies: 55

Undergrad Understanding Gravitation: The Relationship Between Earth and Moon

KingOfTwilight
Apr 2, 2005 · Replies 3 · Apr 2, 2005

Replies: 3

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

brightstar2005
Mar 14, 2005 · Replies 12 · Apr 2, 2005

Replies: 12

Undergrad The most complex extraterrestrial molecule

Loren Booda
Apr 1, 2005 · Replies 1 · Apr 1, 2005

Replies: 1

Graduate Why don't galaxies grow in size as space expands?

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

2

Replies: 58

Graduate Oort Cloud Treat to Interstellar Space Travel

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

Replies: 3

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

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

Replies: 16

Graduate What If: Gravity Changed When Universe Laws Tweaked?

Gold Barz
Mar 30, 2005 · Replies 2 · Mar 30, 2005

Replies: 2

Undergrad Astrophysics Scientific Research

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

Replies: 7

Graduate Infinite-infinite universe explains all

nameta9
Feb 28, 2005 · Replies 42 · Mar 30, 2005

2

Replies: 42

High School Electric Planet? Is It Possible?

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

Replies: 3

Graduate Can We Detect WIMPs and Axions on Earth?

X-43D
Mar 29, 2005 · Replies 4 · Mar 29, 2005

Replies: 4

Graduate Is the Universe Inside a Giant Black Hole?

Uno Lee
Mar 15, 2005 · Replies 15 · Mar 29, 2005

Replies: 15

High School Need Term for a Star and Its Associated Bodies

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

Replies: 6

Stargazing How to Design a Simple Telescope?

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

Replies: 4

Graduate New overview of cosmology for Ashtekar's book

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

Replies: 3

High School Are Solar Systems Common in the Universe?

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

Replies: 4

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

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

2

Replies: 56

Undergrad Atmospheric Pressure determined by?

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

Replies: 1

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

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

Replies: 4

High School What would the age of the universe be 13 billion years ago?

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

3

Replies: 69

Undergrad What Are Common Misconceptions About the Big Bang?

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

Replies: 14

If you reach the end of the universe, is there a wall?

david90
Mar 13, 2005 · Replies 30 · Mar 27, 2005

2

Replies: 30

Undergrad What Is Needed To Make An Intelligent Species?

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

3

Replies: 72

High School Your Definition Of An Earth-Like Planet?

Gold Barz
Mar 26, 2005 · Replies 2 · Mar 26, 2005

Replies: 2

Graduate Angular momentum of galaxy disks

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

Replies: 4

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

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

Replies: 2

Undergrad Would Different Laws Of Physics Affect Gravity?

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

Replies: 11

Graduate Could false vacuum energy account for dark matter?

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

Replies: 16

Oh great, unmoderated alien communications

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

Replies: 4

Undergrad What is the comet's speed at its perihelion

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

Replies: 2

Graduate Is the Vacuum the Same as Quantum Foam?

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

Replies: 5

Undergrad Choosing a solar system target for a satellite mission project

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

Replies: 10

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

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

Replies: 7

Undergrad Relation between Mass and distance between two objects

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

Replies: 6

Undergrad Alternating planetary phase layers

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

Replies: 2

Stargazing Are There Internet Based Telescopes Available for Public Use?

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

Replies: 5

Is the 2nd Big Bang Theory Just Hype?

Cosmo16
Mar 23, 2005 · Replies 2 · Mar 23, 2005

Replies: 2

Graduate How Does Dark Matter Avoid Gravitational Collapse?

moving finger
Mar 23, 2005 · Replies 2 · Mar 23, 2005

Replies: 2

High School Topics about singularities for a 10-minute oral presentation

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

Replies: 4

High School Astrophysics -What actually is this?

!Live_4Ever!
Jan 22, 2005 · Replies 7 · Mar 22, 2005

Replies: 7

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

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

Replies: 2

High School What would happen to Earth if the Moon suddenly disappeared?

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

Replies: 6

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

munky99999
Mar 21, 2005 · Replies 1 · Mar 21, 2005

Replies: 1

What are you doing in your parallel universes?

SOS2008
Mar 17, 2005 · Replies 19 · Mar 19, 2005

Replies: 19

Space Love: A Comic for Astro Nerds!

Andromeda321
Mar 18, 2005 · Replies 1 · Mar 18, 2005

Replies: 1

Graduate More exoplanet equation problems :/

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

Replies: 4

Graduate Lab Fireball at RHIC May Have Black Hole Characteristics

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

Replies: 5

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

Gold Barz
Mar 18, 2005 · Replies 9 · Mar 18, 2005

Replies: 9

Has a Man-Made Black Hole Really Been Created?

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

Replies: 2

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

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

Replies: 11

Graduate Can artificial gravity initiate fusion in hydrogen?

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

Replies: 6

Graduate Holographic universe theory and collective consciousness

rody084
Jan 14, 2004 · Replies 19 · Mar 17, 2005

Replies: 19

High School Software or tables for inter-planetary distances on specific dates

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

Replies: 7

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

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

Replies: 1

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

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

Replies: 14

Graduate I saw an article in New Scientist re CBR

Dayle Record
Mar 16, 2005 · Replies 1 · Mar 16, 2005

Replies: 1

Undergrad Is Life Common and Resilient in the Universe?

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

Replies: 18

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

404
Mar 15, 2005 · Replies 3 · Mar 16, 2005

Replies: 3

Graduate What Happened Before the First Planck Time?

scilover89
Mar 16, 2005 · Replies 2 · Mar 16, 2005

Replies: 2

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

<<<GUILLE>>>
Mar 12, 2005 · Replies 14 · Mar 16, 2005

Replies: 14

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

X-43D
Mar 15, 2005 · Replies 10 · Mar 16, 2005

Replies: 10

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

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

Replies: 5

sidebar

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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