Menu

Navigation

More options

Style variation

Contact us

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.

Filters

Undergrad Gravity & Spacetime: How Mass/Energy Affects It

Aug 27, 2003 · Replies 22 · Aug 30, 2003

Replies: 22

Views: 5K

High School High School Astronomy Classes: A Look at Availability

Aug 30, 2003 · Replies 1 · Aug 30, 2003

Replies: 1

Views: 2K

Graduate Is the Universe Ruled by a Simple Algorithm?

Aug 11, 2003 · Replies 19 · Aug 30, 2003

Replies: 19

Views: 4K

Graduate Round One: Big Bang vs. Little Bang

Aug 29, 2003 · Replies 4 · Aug 30, 2003

Replies: 4

Views: 7K

Stargazing Star of David and Total Lunar Eclipse

Aug 24, 2003 · Replies 4 · Aug 30, 2003

Replies: 4

Views: 8K

Graduate Discover the Power of Quantum Haiku in the Sun's Proton-Proton Chain Reaction

Aug 29, 2003 · Replies 2 · Aug 29, 2003

Replies: 2

Views: 3K

Night Sky Watching: The International Space Station

Aug 28, 2003 · Replies 1 · Aug 28, 2003

Replies: 1

Views: 6K

Which Nebula is Your Favorite Astronomy Photo?

Jul 31, 2003 · Replies 4 · Aug 27, 2003

Replies: 4

Views: 3K

Undergrad Is Our Universe Just a Giant Black Hole in an Infinite Cycle?

Aug 22, 2003 · Replies 25 · Aug 27, 2003

Replies: 25

Views: 5K

Graduate Can a Star be Too Big to be Detected?

Aug 12, 2003 · Replies 15 · Aug 27, 2003

Replies: 15

Views: 4K

Graduate Is Space and Time Discrete According to Eugene Savov's Theory of Interaction?

Aug 24, 2003 · Replies 8 · Aug 26, 2003

Replies: 8

Views: 4K

Graduate The finite bang fallacy rears its head again

Aug 24, 2003 · Replies 18 · Aug 25, 2003

Replies: 18

Views: 5K

Graduate Another B.Forums blooper: It grows at the speed of light

Aug 24, 2003 · Replies 6 · Aug 24, 2003

Replies: 6

Views: 3K

Graduate Glitter, Balloons and Jell-O, a model of the Universe.

Aug 19, 2003 · Replies 10 · Aug 24, 2003

Replies: 10

Views: 5K

Humble Hubble a star that will not fade

Aug 22, 2003 · Replies 8 · Aug 24, 2003

Replies: 8

Views: 3K

Graduate Are Wet, Rocky Planets Common in the Universe?

Aug 23, 2003 · Replies 2 · Aug 24, 2003

Replies: 2

Views: 3K

Graduate Did Space Have Properties Before the Big Bang?

Jul 30, 2003 · Replies 57 · Aug 23, 2003

2

Replies: 57

Views: 8K

Graduate Why Do Smaller Black Holes Have Higher Temperatures?

Aug 5, 2003 · Replies 82 · Aug 23, 2003

3

Replies: 82

Views: 11K

Graduate Background Radiation & Neutrino Questions

Aug 17, 2003 · Replies 20 · Aug 22, 2003

Replies: 20

Views: 6K

High School Understanding the Rarity of Elements in the Universe

Aug 21, 2003 · Replies 1 · Aug 21, 2003

Replies: 1

Views: 5K

Undergrad Does the universe specify a mass limit?

Aug 11, 2003 · Replies 6 · Aug 21, 2003

Replies: 6

Views: 3K

Graduate The Rings of Earth: Tidal Interactions Between Earth, Moon, & Sun

Aug 3, 2003 · Replies 24 · Aug 19, 2003

Replies: 24

Views: 5K

Undergrad Moon Derives From Earth, Space Object, Study Says: Nat' Geographic.com

Aug 13, 2003 · Replies 1 · Aug 19, 2003

Replies: 1

Views: 3K

Mars at its Closest: Separating Science from Entertainment

Aug 13, 2003 · Replies 9 · Aug 18, 2003

Replies: 9

Views: 12K

Poll

How should we retire the Hubble?

Aug 11, 2003 · Replies 11 · Aug 18, 2003

Replies: 11

Views: 4K

Dealing with Humidity While Stargazing: Is It Worth It?

Aug 14, 2003 · Replies 5 · Aug 18, 2003

Replies: 5

Views: 4K

Graduate Breaking Space: Can Tiny Loops Reach Their Breaking Point?

Aug 6, 2003 · Replies 12 · Aug 17, 2003

Replies: 12

Views: 3K

Poll

Graduate How much entropy is in the universe?

Aug 2, 2003 · Replies 10 · Aug 17, 2003

Replies: 10

Views: 6K

Graduate Black Holes & Fermi exclusion principle

Aug 14, 2003 · Replies 3 · Aug 15, 2003

Replies: 3

Views: 7K

Undergrad 2 Black Holes: What Would Happen?

Aug 13, 2003 · Replies 2 · Aug 13, 2003

Replies: 2

Views: 2K

Graduate Spacetime has no physical existence

Aug 8, 2003 · Replies 7 · Aug 10, 2003

Replies: 7

Views: 4K

Poll

How would you rate your area as a star gazing spot?

Jul 28, 2003 · Replies 24 · Aug 9, 2003

Replies: 24

Views: 5K

Undergrad Gravitational effect on planets when

Aug 1, 2003 · Replies 7 · Aug 8, 2003

Replies: 7

Views: 4K

Graduate Squashed Star Flattens Solar Theory

Jul 12, 2003 · Replies 46 · Aug 7, 2003

2

Replies: 46

Views: 6K

Graduate What is the Evidence for Dark Energy on Small Scales?

Aug 5, 2003 · Replies 2 · Aug 5, 2003

Replies: 2

Views: 3K

New players needed in Astronomy gamethread

Aug 4, 2003 · Replies 1 · Aug 5, 2003

Replies: 1

Views: 3K

Americans still positive about space program

Jul 28, 2003 · Replies 4 · Aug 4, 2003

Replies: 4

Views: 3K

Poll

Graduate Picturing the history of the world's expansion

Aug 2, 2003 · Replies 5 · Aug 4, 2003

Replies: 5

Views: 5K

Graduate New Theory: Catastrophe Created Mars' Moons: Space.com

Jul 31, 2003 · Replies 2 · Aug 4, 2003

Replies: 2

Views: 4K

Strange Spots on Mars: Space.com

Aug 1, 2003 · Replies 3 · Aug 4, 2003

Replies: 3

Views: 4K

Poll

How you picture the expansion of space.

Jul 24, 2003 · Replies 19 · Aug 3, 2003

Replies: 19

Views: 4K

Poll

High School What is Dark Energy: The Most Common Type of Energy in the Universe

Jul 29, 2003 · Replies 8 · Aug 2, 2003

Replies: 8

Views: 4K

Graduate Evidence for a finite universe

Aug 2, 2003 · Replies 2 · Aug 2, 2003

Replies: 2

Views: 4K

Undergrad Martian warm spots could be towers of ice: Newscientists.com

Jul 30, 2003 · Replies 1 · Aug 1, 2003

Replies: 1

Views: 3K

Poll

Your picture of universe's timeline

Jul 24, 2003 · Replies 17 · Aug 1, 2003

Replies: 17

Views: 6K

Undergrad Exploring the Similarities and Differences between Black Holes and Black Bodies

Jul 30, 2003 · Replies 2 · Jul 31, 2003

Replies: 2

Views: 8K

Shuttle Launch Leader: Who Is It?

Jul 30, 2003 · Replies 3 · Jul 31, 2003

Replies: 3

Views: 3K

Undergrad Gravity Collapse on Planets: Physicists' Perspective

Jul 30, 2003 · Replies 2 · Jul 30, 2003

Replies: 2

Views: 3K

Graduate The beginning/end of the universe

Jul 23, 2003 · Replies 12 · Jul 29, 2003

Replies: 12

Views: 6K

Undergrad What Are the Key Gravitational and Nuclear Effects in a Star's Life Cycle?

Jul 27, 2003 · Replies 4 · Jul 29, 2003

Replies: 4

Views: 3K

High School What unit is used to measure volume in space?

Jul 28, 2003 · Replies 1 · Jul 29, 2003

Replies: 1

Views: 4K

Undergrad Asteroid hazard revised: Nature.com

Jul 17, 2003 · Replies 5 · Jul 29, 2003

Replies: 5

Views: 3K

Graduate How Do Gravity Anomalies Affect Earth's Shape?

Jul 25, 2003 · Replies 2 · Jul 28, 2003

Replies: 2

Views: 4K

High School Does the Cosmological Constant Exist?

Jul 25, 2003 · Replies 15 · Jul 27, 2003

Replies: 15

Views: 7K

High School Newfound Stars are Huge, Powerful and Frantic: Space.com

Jul 24, 2003 · Replies 1 · Jul 25, 2003

Replies: 1

Views: 3K

Graduate J1148+5251 is the most distant object known

Jul 25, 2003 · Replies 5 · Jul 25, 2003

Replies: 5

Views: 4K

Uncovering the Mystery of a 12.8 Billion Year Old Planet

Jul 11, 2003 · Replies 25 · Jul 24, 2003

Replies: 25

Views: 6K

Graduate Brief perspective on notion of the big bang

Jul 21, 2003 · Replies 19 · Jul 23, 2003

Replies: 19

Views: 5K

Graduate On the topic of curved spacetimes

Jul 13, 2003 · Replies 6 · Jul 23, 2003

Replies: 6

Views: 3K

Discover the Mind-Blowing Count of 70 Sextillion Stars in the Universe

Jul 22, 2003 · Replies 8 · Jul 23, 2003

Replies: 8

Views: 6K

High School Distance of a Supernova Candidate from Earth: Is it Safe?

Jul 23, 2003 · Replies 1 · Jul 23, 2003

Replies: 1

Views: 4K

Graduate Curved Space: Understanding the Concept of Twisting in Physics

Jul 17, 2003 · Replies 31 · Jul 21, 2003

2

Replies: 31

Views: 5K

Graduate Uncovering the Origins of the Universe: Insights from the Big Bang Singularity

Jul 20, 2003 · Replies 11 · Jul 21, 2003

Replies: 11

Views: 3K

Graduate Is Gravity Caused by the Motion of Particles in the Fabric of Space?

Apr 6, 2003 · Replies 463 · Jul 18, 2003

16

Replies: 463

Views: 74K

Undergrad Questions About Nebulas & Protostars - Get Answers Now

Jul 18, 2003 · Replies 1 · Jul 18, 2003

Replies: 1

Views: 9K

Undergrad After Big Bang: Hydrogen & Helium Formed, But Why Didn't They Burn?

Jul 18, 2003 · Replies 6 · Jul 18, 2003

Replies: 6

Views: 3K

The Moon's Impact on Earth: More Than Just a Source of Myths?

Jul 12, 2003 · Replies 13 · Jul 18, 2003

Replies: 13

Views: 11K

Graduate Lineweaver(May 2003)-web's best cosmology tutorial

Jun 26, 2003 · Replies 6 · Jul 18, 2003

Replies: 6

Views: 4K

Graduate Time zero glitch fades out/less need for inflation

Jul 15, 2003 · Replies 7 · Jul 18, 2003

Replies: 7

Views: 3K

Graduate Searching for a string explanation

Jul 13, 2003 · Replies 108 · Jul 17, 2003

4

Replies: 108

Views: 13K

Oldest Planet Discovery: What Does it Reveal About Our Understanding of Age?

Jul 17, 2003 · Replies 1 · Jul 17, 2003

Replies: 1

Views: 3K

Graduate What is our actual Hubble speed ?

Jul 15, 2003 · Replies 18 · Jul 16, 2003

Replies: 18

Views: 4K

Graduate What is Our Actual Hubble Speed and How Does it Relate to CMB?

Jul 15, 2003 · Replies 6 · Jul 16, 2003

Replies: 6

Views: 4K

High School What Lies at the Center of the Universe?

Jul 4, 2003 · Replies 291 · Jul 15, 2003

10

Replies: 291

Views: 36K

Undergrad Does Gravity Affect Light in Stars?

Jul 12, 2003 · Replies 12 · Jul 15, 2003

Replies: 12

Views: 4K

High School Why do we only see one side of the moon?

Jul 5, 2003 · Replies 65 · Jul 15, 2003

3

Replies: 65

Views: 30K

Graduate Why is inflation thought necessary in std. cosm.?

Jul 12, 2003 · Replies 18 · Jul 14, 2003

Replies: 18

Views: 5K

Undergrad Gravity and Rotation: Understanding the Influence of Speed on Planetary Force

Jul 13, 2003 · Replies 7 · Jul 14, 2003

Replies: 7

Views: 6K

Graduate What makes a flat, finite universe seem unfeasible?

Jul 11, 2003 · Replies 8 · Jul 14, 2003

Replies: 8

Views: 4K

Graduate What question can we ask about Hubble constant measurement?

Jul 7, 2003 · Replies 15 · Jul 14, 2003

Replies: 15

Views: 6K

Graduate Before the Big Bang: The Leading Theory on the Birth of the Universe

Jul 11, 2003 · Replies 15 · Jul 13, 2003

Replies: 15

Views: 5K

Graduate Much of our understanding of the physics of AGN

Jul 12, 2003 · Replies 1 · Jul 13, 2003

Replies: 1

Views: 3K

High School Can Anyone Explain the Hertzsprung-Russell Diagram?

Jul 12, 2003 · Replies 1 · Jul 13, 2003

Replies: 1

Views: 3K

Graduate Why Is Understanding Curved Space Essential for Astronomy?

Jul 12, 2003 · Replies 24 · Jul 13, 2003

Replies: 24

Views: 6K

Undergrad Number of Galaxies: Is It Infinite?

Jul 5, 2003 · Replies 74 · Jul 11, 2003

3

Replies: 74

Views: 13K

Graduate Is the Universe Really Not Expanding?

Jul 7, 2003 · Replies 46 · Jul 11, 2003

2

Replies: 46

Views: 11K

Undergrad Can a Solar System Exist Without a Central Star?

Jul 6, 2003 · Replies 11 · Jul 10, 2003

Replies: 11

Views: 8K

Mars-56million km closer to earth

Jun 29, 2003 · Replies 3 · Jul 10, 2003

Replies: 3

Views: 3K

High School Orion's XT8 8 Dobsonian as a good beginner scope

Jun 30, 2003 · Replies 27 · Jul 10, 2003

Replies: 27

Views: 10K

Graduate Understanding Solar Sails: The Physics Behind the Poofing Effect

Jul 6, 2003 · Replies 35 · Jul 10, 2003

2

Replies: 35

Views: 9K

Graduate How Does Quantum Probability Affect Discrete Space in Loop Quantum Gravity?

Jul 8, 2003 · Replies 2 · Jul 8, 2003

Replies: 2

Views: 3K

Undergrad Absolute 0 at the before the begging

Jul 4, 2003 · Replies 6 · Jul 8, 2003

Replies: 6

Views: 4K

Graduate Falling Object at c: Relativistic Position Expression for the Attracted Object

Jul 3, 2003 · Replies 5 · Jul 7, 2003

Replies: 5

Views: 4K

High School How Will Our Solar System End

Jul 6, 2003 · Replies 12 · Jul 7, 2003

Replies: 12

Views: 7K

Aliens/Intelligant Life forms, do they exist?

May 17, 2003 · Replies 64 · Jul 7, 2003

3

Replies: 64

Views: 12K

High School Solar System Similar to Ours Found

Jul 4, 2003 · Replies 6 · Jul 7, 2003

Replies: 6

Views: 3K

Undergrad How Do Black Hole Schematics Work?

Jul 4, 2003 · Replies 4 · Jul 6, 2003

Replies: 4

Views: 3K

Undergrad Out there physics/astrology question

Jun 24, 2003 · Replies 15 · Jul 4, 2003

Replies: 15

Views: 4K

High School Mystifying Star: Spinning So Fast It's Flattening Out?

Jun 29, 2003 · Replies 18 · Jul 2, 2003

Replies: 18

Views: 6K

High School Scary Statistics: American Beliefs from 2002-1969

Jun 19, 2003 · Replies 26 · Jul 1, 2003

Replies: 26

Views: 8K

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.

Top