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
Identifying Objects in the Solar System
- ElizebethDylan
- · Replies 15 ·
Graduate How big can a body get (size wize) before it collapses onto itslef?
- rubecuber
- · Replies 11 ·
Graduate Would a black hole create a wormhole in space?
- cooldude3122
- · Replies 5 ·
Graduate Finding AGB Star Phases: Modeling S-Process in a Helium Shell Burning Region
- malawi_glenn
- · Replies 2 ·
Graduate What Lies Beyond the Edge of the Universe?
- ColdFusion85
- · Replies 36 ·
Graduate What Happened to the Energy from Matter/Anti-Matter Annihilation?
- phetuspolice
- · Replies 1 ·
Is There Real Evidence for the Moon Landing?
- davidschmid10
- · Replies 3 ·
High School Please recommend books for layperson?
- squidley
- · Replies 8 ·
Graduate Is the Evidence for Dark Energy Secure?
- cristo
- · Replies 5 ·
Undergrad Explore the Night Sky with an Online Planetarium at Astronomy-Page.com
- Art
- · Replies 3 ·
Undergrad Calculating Circumpolar Star Declination for Different Latitudes
- shaheen
- · Replies 3 ·
High School Beginners Questions about Astronomy
- onemind
- · Replies 6 ·
Graduate G from cosmological measurements
- rbj
- · Replies 1 ·
High School Can Carbon Nanotubes Make Space Elevators a Reality?
- DaveC426913
- · Replies 33 ·
Graduate An way to visualize dark matters effects on space-time?
- freerangequark
- · Replies 4 ·
Graduate Thought Experiment on Dark Matter
- notknowing
- · Replies 2 ·
High School Get Astronomy Homework Help for Confusing Problems - Due Tomorrow Morning!
- ElizebethDylan
- · Replies 1 ·
Graduate What is the elusive origin of gravity?
- wolram
- · Replies 70 ·
High School Agol, Interesting objects in Perseus.
- Integral
- · Replies 5 ·
Undergrad Does Increasing Density Increase Gravity?
- gaurav_shade
- · Replies 27 ·
Undergrad What Are the Latest Discoveries in the Search for Earth-like Exoplanets?
- El Hombre Invisible
- · Replies 2 ·
Graduate What Is the Universe's Topology According to Recent Research?
- Pavel
- · Replies 25 ·
High School Which Books Are Best for Beginners in Cosmology?
- pkarnett
- · Replies 5 ·
Graduate Question about the Horizon Problem
- NumberTenOx
- · Replies 9 ·
Graduate Data on galaxies -good references ?
- notknowing
- · Replies 1 ·
Undergrad Types of Supernovae: How to Distinguish Them
- pixel01
- · Replies 1 ·
Graduate Singularity/Expanding Universe questions
- swerdna
- · Replies 25 ·
High School Space Temperature: Is There a Temperature in Space?
- marsi
- · Replies 3 ·
Graduate Is Faster-Than-Light Travel the Key to Interplanetary Exploration?
- TomMac321
- · Replies 13 ·
Stargazing Looking for advice on telescope
- Art
- · Replies 8 ·
Undergrad Solar Wind Flux: Electron/Proton Count Reaching Earth
- spideyinspace
- · Replies 2 ·
Undergrad Weight dependent on planet size and rotation speed?
- NHsolarguy
- · Replies 1 ·
Undergrad Starting in Cosmology: Understanding the Role of Physics and GR
- quantumfireball
- · Replies 7 ·
Stargazing Is there a DSLR with programmable frame rate for sequential shots?
- Telmerk
- · Replies 3 ·
Graduate Miniprobes for interstellar exploration
- OSalcido
- · Replies 8 ·
High School Why Does the Aurora Only Occur in the North Pole?
- spideyinspace
- · Replies 2 ·
High School Is the Milky Way Really a Spiral Galaxy?
- pixel01
- · Replies 2 ·
High School Can Dark Matter and Dark Energy Be Used to Explain Superhero Powers?
- Benicus
- · Replies 4 ·
Is the Rocket Equation Holding Back Space Shuttle Safety?
- ScienceGurl
- · Replies 26 ·
Undergrad Fusion in the Sun: Neutrons or Neutrinos – What is Produced?
- spideyinspace
- · Replies 6 ·
Undergrad Does the Sun's fusion reaction produce neutrons or neutrinos?
- spideyinspace
- · Replies 4 ·
Graduate Can Andromeda Detect Earth's Past with a Giant Telescope?
- Holocene
- · Replies 20 ·
Graduate Highest Energy Cosmic Rays Linked to Violent Black Holes
- ZapperZ
- · Replies 8 ·
Graduate What Happens When a Black Hole Evaporates Below its Schwarzschild Radius?
- Ascending One
- · Replies 32 ·
Graduate Why Do Scientists Believe in the Existence of Wormholes?
- bassplayer142
- · Replies 1 ·
Graduate Confused about Metallicity Measurement in Milky Way
- malawi_glenn
- · Replies 2 ·
Graduate Discussing Arp's Cosmology: Issues & Evidence
- pervect
- · Replies 4 ·
High School Matter & Space: Interaction & Occupancy
- a Buddhist
- · Replies 4 ·
High School Is the Universe Actually Spiky Instead of Smooth?
- poet
- · Replies 2 ·
Graduate Solving the Dispute: Criticism of Hartle-Hawking Model Explained
- pbethala
- · Replies 5 ·
The Mystery of the Origin of the Universe: Perspectives and Theories Explored
- Joza
- · Replies 13 ·
Stargazing Neutrino Telescopes may have nothing to see
- BDOA
- · Replies 9 ·
What is the Naked Eye Comet in Perseus?
- wildman
- · Replies 11 ·
Graduate What is the Estimated Local Star Formation Rate and How Accurate is it?
- randa177
- · Replies 5 ·
Graduate Upper limit on the rest mass of neutrinos if. .
- UMich1344
- · Replies 1 ·
Undergrad Question about the obliquity of the ecliptic
- plutoisacomet
- · Replies 4 ·
Undergrad Questioning the big bang theory.
- James_Egan
- · Replies 8 ·
Graduate Is the Universe Actually a Cosmic Computer?
- martix
- · Replies 3 ·
Undergrad What Happens in Black and White Holes?
- DR OF DEATH
- · Replies 26 ·
Graduate Photon Energy vs. Red Shift, Inflation Theory, Acceleration
- gtw
- · Replies 18 ·
Graduate Meaning of cosmological constant ?
- notknowing
- · Replies 4 ·
Graduate Cause of Quasar Wind: The Mystery
- Jorrie
- · Replies 7 ·
Graduate Does the Big Bang Theory Break Down at the Planck Time?
- Moridin
- · Replies 12 ·
High School Does a Black hole emit anything?
- n4nova
- · Replies 1 ·
Graduate Hubble's Redshift: Conclusions and Vacuum Solutions
- OOO
- · Replies 3 ·
Undergrad How Much difference b2in theoritical and experimental astrophysics?
- SuperStringboy
- · Replies 1 ·
High School Why do planets revolve in elliptical orbits?
- spideyinspace
- · Replies 2 ·
Undergrad Albedo and reflected light from the moon
- Billahertz
- · Replies 8 ·
Graduate How Can We See the Universe's Past if We Are Made from It?
- rogerp
- · Replies 10 ·
Graduate Does the Confusing Supernova Challenge the Big Bang Theory?
- pbethala
- · Replies 4 ·
Graduate Is the Big Bang Theory a Foolhardy Extrapolation?
- OOO
- · Replies 58 ·
Graduate Big Bang and the Second Law of Thermodynamics
- pbethala
- · Replies 3 ·
High School What Pulls the Sun? Understanding Gravitational Pull and Mass Effect
- michelrochette
- · Replies 7 ·
Graduate Can Future Civilizations Harness Entropy to Survive in an Expanding Universe?
- hammertime
- · Replies 3 ·
Graduate What is the ultimate fate of the universe?
- hammertime
- · Replies 2 ·
High School Does a planets orbit ever go chaotic?
- Hamish Cruickshank
- · Replies 5 ·
Stargazing Non-Magnifying Telescope Lenses: Components & Effects
- mufan
- · Replies 8 ·
Graduate Friedmann Cosmology at T < 1 second
- Jorrie
- · Replies 10 ·
Is Earth at Risk from Rogue Black Holes?
- hammertime
- · Replies 5 ·
High School What Does Expanding Universe Mean?
- Dan Tee
- · Replies 7 ·
Undergrad Universe expansion -> t = - inifinite
- JPC
- · Replies 5 ·
Graduate Question on gravitational lensing
- notknowing
- · Replies 8 ·
Graduate Another hawking radiation question
- jnorman
- · Replies 1 ·
High School Gravity & Big Bang: Can Matter Escape Its Own Pull?
- kalle437
- · Replies 3 ·
Graduate Can a Photon's Energy Approach Zero?
- jonmtkisco
- · Replies 4 ·
Undergrad A Parallel Planet: Discovering Unseen Worlds
- Blackwing
- · Replies 20 ·
Graduate Friiedman Fun Facts to know and tell
- jonmtkisco
- · Replies 54 ·
High School Planets and Stars: Will Our Sun Orbit Bodies With Greater Gravity?
- Destrio
- · Replies 10 ·
Graduate What are the unexpected aspects of cosmology?
- wolram
- · Replies 2 ·
High School Asteroid Database: Find Objects with RA, Dec & Julian Date
- big man
- · Replies 5 ·
Graduate Are Wormholes at the End of Black Holes a Possible Theory?
- riverkee
- · Replies 3 ·
Graduate Can Energy Compression Create a Black Hole?
- randa177
- · Replies 6 ·
High School Edwin Hubble's Redshift and the Hubble Space Telescope
- Holocene
- · Replies 11 ·
Is the Space Station Being Decommissioned?
- ScienceGurl
- · Replies 13 ·
Graduate Big Bang and Big Rip Theory: Is Expansion the End?
- CuriousGreg
- · Replies 6 ·
Graduate Is There an Infinite Number of Universes in Infinity Itself?
- jazzdude9792
- · Replies 11 ·
Graduate Objects Entering Black Holes: The "Spaghetti" Effect
- cooldude3122
- · Replies 2 ·
Stargazing Gaze the Stars: Tips for High Schooler Stargazing in OC
- Ki Man
- · Replies 8 ·
High School Electron, Atom, Planet, Star: Do All Galaxies Orbit a Single Mass?
- Destrio
- · Replies 3 ·
What is the estimated age of the Kebira crater in Libya?
- pixel01
- · Replies 1 ·