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.
Threads
Which Nebula is Your Favorite Astronomy Photo?
- Greg Bernhardt
- · Replies 4 ·
Undergrad Is Our Universe Just a Giant Black Hole in an Infinite Cycle?
- Owl
- · Replies 25 ·
Graduate Can a Star be Too Big to be Detected?
- Shirley
- · Replies 15 ·
High School Unlimited Universe: Debunking Theories of a Warped Universe
- zydubion
- · Replies 21 ·
Graduate Is Space and Time Discrete According to Eugene Savov's Theory of Interaction?
- clicky
- · Replies 8 ·
Graduate The finite bang fallacy rears its head again
- marcus
- · Replies 18 ·
Graduate The Universe's Blackbody Spectrum: Why is it Troublesome?
- Astronomer107
- · Replies 2 ·
Graduate Is Antimatter Missing Because It Traveled Back in Time?
- FZ+
- · Replies 16 ·
Graduate Another B.Forums blooper: It grows at the speed of light
- marcus
- · Replies 6 ·
Graduate Glitter, Balloons and Jell-O, a model of the Universe.
- nuke_c
- · Replies 10 ·
Humble Hubble a star that will not fade
- Ivan Seeking
- · Replies 8 ·
Graduate Are Wet, Rocky Planets Common in the Universe?
- marcus
- · Replies 2 ·
Graduate Did Space Have Properties Before the Big Bang?
- wolram
- · Replies 57 ·
Graduate Why Do Smaller Black Holes Have Higher Temperatures?
- Tail
- · Replies 82 ·
Could human beings accept thier place in the universes?
- Zantra
- · Replies 20 ·
Graduate Background Radiation & Neutrino Questions
- Nim
- · Replies 20 ·
High School Understanding the Rarity of Elements in the Universe
- Nim
- · Replies 1 ·
Undergrad Does the universe specify a mass limit?
- SamBuckler
- · Replies 6 ·
Graduate Possibility of a Conscious Universe: Proving Life and Awareness
- M. Gaspar
- · Replies 299 ·
Graduate The Rings of Earth: Tidal Interactions Between Earth, Moon, & Sun
- Janus
- · Replies 24 ·
Undergrad Moon Derives From Earth, Space Object, Study Says: Nat' Geographic.com
- Ivan Seeking
- · Replies 1 ·
Mars at its Closest: Separating Science from Entertainment
- Gale
- · Replies 9 ·
Dealing with Humidity While Stargazing: Is It Worth It?
- kleinma
- · Replies 5 ·
Graduate Breaking Space: Can Tiny Loops Reach Their Breaking Point?
- meteor
- · Replies 12 ·
Graduate Black Holes & Fermi exclusion principle
- Kalimaa23
- · Replies 3 ·
Undergrad 2 Black Holes: What Would Happen?
- hell18
- · Replies 2 ·
Graduate Universe began at a singualrity at the big bang
- photon
- · Replies 11 ·
Graduate Spacetime has no physical existence
- marcus
- · Replies 7 ·
Undergrad Doughnut shaped Universe: Valid or Just Sugar-coated?
- Devilin
- · Replies 13 ·
Undergrad Gravitational effect on planets when
- Hyperreality
- · Replies 7 ·
Graduate Squashed Star Flattens Solar Theory
- subtillioN
- · Replies 46 ·
Graduate What is the Evidence for Dark Energy on Small Scales?
- Brad_Ad23
- · Replies 2 ·
New players needed in Astronomy gamethread
- marcus
- · Replies 1 ·
Americans still positive about space program
- Phobos
- · Replies 4 ·
Graduate New Theory: Catastrophe Created Mars' Moons: Space.com
- Ivan Seeking
- · Replies 2 ·
Strange Spots on Mars: Space.com
- Ivan Seeking
- · Replies 3 ·
Undergrad Einstein's Cosmological Constant
- Finger Painter
- · Replies 5 ·
- Poll
High School What is Dark Energy: The Most Common Type of Energy in the Universe
- meteor
- · Replies 8 ·
Graduate Evidence for a finite universe
- Eh
- · Replies 2 ·
Undergrad Martian warm spots could be towers of ice: Newscientists.com
- Ivan Seeking
- · Replies 1 ·
Undergrad Exploring the Similarities and Differences between Black Holes and Black Bodies
- vedder
- · Replies 2 ·
Shuttle Launch Leader: Who Is It?
- Astronomer107
- · Replies 3 ·
Graduate How can the universe exist without time?
- Zantra
- · Replies 44 ·
Undergrad Gravity Collapse on Planets: Physicists' Perspective
- Hyperreality
- · Replies 2 ·
Graduate The beginning/end of the universe
- myok
- · Replies 12 ·
Undergrad What Are the Key Gravitational and Nuclear Effects in a Star's Life Cycle?
- Bunting
- · Replies 4 ·
High School What unit is used to measure volume in space?
- Chen
- · Replies 1 ·
Undergrad Asteroid hazard revised: Nature.com
- Ivan Seeking
- · Replies 5 ·
Undergrad Calculating the Size of the Universe
- Mattius_
- · Replies 21 ·
Graduate How Do Gravity Anomalies Affect Earth's Shape?
- Ivan Seeking
- · Replies 2 ·
High School Does the Cosmological Constant Exist?
- newton1
- · Replies 15 ·
High School Newfound Stars are Huge, Powerful and Frantic: Space.com
- Ivan Seeking
- · Replies 1 ·
Graduate J1148+5251 is the most distant object known
- meteor
- · Replies 5 ·
Uncovering the Mystery of a 12.8 Billion Year Old Planet
- quantumcarl
- · Replies 25 ·
Graduate Brief perspective on notion of the big bang
- marcus
- · Replies 19 ·
Graduate On the topic of curved spacetimes
- Brad_Ad23
- · Replies 6 ·
Discover the Mind-Blowing Count of 70 Sextillion Stars in the Universe
- Phobos
- · Replies 8 ·
High School Distance of a Supernova Candidate from Earth: Is it Safe?
- Doctor Luz
- · Replies 1 ·
Graduate Curved Space: Understanding the Concept of Twisting in Physics
- mitch bass
- · Replies 31 ·
Graduate Uncovering the Origins of the Universe: Insights from the Big Bang Singularity
- MathematicalPhysicist
- · Replies 11 ·
Graduate Unveiling the Mysteries of Dark Objects
- Tyger
- · Replies 4 ·
Many universes like there are solar systems in a galaxy
- sheldon
- · Replies 7 ·
Graduate Is Gravity Caused by the Motion of Particles in the Fabric of Space?
- Nigel
- · Replies 463 ·
Undergrad Questions About Nebulas & Protostars - Get Answers Now
- maximus
- · Replies 1 ·
Undergrad After Big Bang: Hydrogen & Helium Formed, But Why Didn't They Burn?
- Einstein
- · Replies 6 ·
The Moon's Impact on Earth: More Than Just a Source of Myths?
- Saint
- · Replies 13 ·
Graduate Lineweaver(May 2003)-web's best cosmology tutorial
- marcus
- · Replies 6 ·
Graduate Time zero glitch fades out/less need for inflation
- marcus
- · Replies 7 ·
Graduate Searching for a string explanation
- mitch bass
- · Replies 108 ·
Oldest Planet Discovery: What Does it Reveal About Our Understanding of Age?
- Sourire
- · Replies 1 ·
Graduate What is our actual Hubble speed ?
- Imagine
- · Replies 18 ·
Graduate What is Our Actual Hubble Speed and How Does it Relate to CMB?
- marcus
- · Replies 6 ·
High School What Lies at the Center of the Universe?
- The Grimmus
- · Replies 291 ·
Undergrad Does Gravity Affect Light in Stars?
- Shirley
- · Replies 12 ·
High School Why do we only see one side of the moon?
- Azrioch
- · Replies 65 ·
Graduate Why is inflation thought necessary in std. cosm.?
- marcus
- · Replies 18 ·
Undergrad Gravity and Rotation: Understanding the Influence of Speed on Planetary Force
- mitch bass
- · Replies 7 ·
Graduate What makes a flat, finite universe seem unfeasible?
- Hurkyl
- · Replies 8 ·
Graduate What question can we ask about Hubble constant measurement?
- Imagine
- · Replies 15 ·
Graduate Before the Big Bang: The Leading Theory on the Birth of the Universe
- kleinma
- · Replies 15 ·
Graduate Much of our understanding of the physics of AGN
- wolram
- · Replies 1 ·
High School Can Anyone Explain the Hertzsprung-Russell Diagram?
- aidan
- · Replies 1 ·
Graduate Why Is Understanding Curved Space Essential for Astronomy?
- Hurkyl
- · Replies 24 ·
Undergrad Number of Galaxies: Is It Infinite?
- meteor
- · Replies 74 ·
Graduate Is the Universe Really Not Expanding?
- wolram
- · Replies 46 ·
Undergrad Can a Solar System Exist Without a Central Star?
- The Grimmus
- · Replies 11 ·
Mars-56million km closer to earth
- Draco
- · Replies 3 ·
Graduate Vipers amazing nicked ideas on the universe
- Viper
- · Replies 4 ·
High School Orion's XT8 8 Dobsonian as a good beginner scope
- kleinma
- · Replies 27 ·
Graduate Understanding Solar Sails: The Physics Behind the Poofing Effect
- drag
- · Replies 35 ·
Graduate How Does Quantum Probability Affect Discrete Space in Loop Quantum Gravity?
- Eh
- · Replies 2 ·
Undergrad Absolute 0 at the before the begging
- The Grimmus
- · Replies 6 ·
Graduate Falling Object at c: Relativistic Position Expression for the Attracted Object
- Imagine
- · Replies 5 ·
High School How Will Our Solar System End
- The Grimmus
- · Replies 12 ·