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
High School Finding Solar Path Data - Resources for Sun Position in Sky
- ALime88
- · Replies 2 ·
Galaxy was headed at us at like 100 times faster than a bullet
- Daark Nova
- · Replies 14 ·
Graduate What is M Theory? Understanding the Basics of this Fascinating Concept
- Kakorot
- · Replies 3 ·
High School How Can Light Exist When Time is Stopped?
- spooky
- · Replies 5 ·
Graduate Does an infinite universe always repeat its parts?
- Loren Booda
- · Replies 15 ·
Graduate Infinite Universe Energy: CMBR Impact?
- gonzo
- · Replies 1 ·
Graduate Discover the Latest Baryonic Mass Figures from the Galaxy Red Shift Survey
- wolram
- · Replies 7 ·
Is Sending Machines into Deep Space a Wise Decision for Humanity's Future?
- Daark Nova
- · Replies 12 ·
Is an Astronomy Degree Practical?
- stjimmy
- · Replies 10 ·
Is NASA Replacing Columbia with a New Shuttle?
- Moneer81
- · Replies 10 ·
Undergrad How Is Dark Matter So Hot Yet Invisible?
- Mean-Hippy
- · Replies 10 ·
Graduate Origin of Matter in Universe: Survey & Questions
- MrBlonde
- · Replies 7 ·
Graduate GoldBarz asks: wd laws work in different dimens. universe?
- marcus
- · Replies 5 ·
Graduate Atoms, Black Holes and Singularities: A Historian's Questions
- Undomiel
- · Replies 11 ·
Undergrad The Big Splat: Origin of Our Moon
- chronon
- · Replies 3 ·
Graduate The Upper Limit of Star Mass: Theories and Uncertainties | arXiv.org"
- marcus
- · Replies 3 ·
High School Calculate Sun Angle: Length of Object by Shadow
- Ba
- · Replies 7 ·
Graduate Is Science Fiction a Legitimate Source of Scientific Ideas?
- Ivan Seeking
- · Replies 8 ·
Graduate Find the universe point of origin based on location of cellestrella bodies?
- whatzzupboy
- · Replies 4 ·
Graduate Unveiling the Mystery of Antimatter in the Universe
- Icebreaker
- · Replies 8 ·
State Your Opinion on String Theory
- Daark Nova
- · Replies 5 ·
Graduate Hubbles's law and the Dark Energy Component
- Lacy33
- · Replies 4 ·
Undergrad ET Visitors: Scientists See High Likelihood
- Ivan Seeking
- · Replies 22 ·
Graduate Solar super-sail could reach Mars in a month
- Ivan Seeking
- · Replies 9 ·
Graduate The predictions it makes don't agree with reality. Enough said
- Tapsnap
- · Replies 3 ·
High School I have a Question about the big bang theory
- Daark Nova
- · Replies 10 ·
Graduate Are Branes the Key to Understanding Multiple Universes?
- Gold Barz
- · Replies 8 ·
Graduate Does Cosmology Need Radical Ideas Like Transforming Dark Matter and Dark Energy?
- marcus
- · Replies 1 ·
Graduate Life Improbable In 4D+ Universes
- Gold Barz
- · Replies 11 ·
Graduate Could a Closed Universe Reverse Time During Collapse?
- Rasine
- · Replies 2 ·
Graduate In The Future Beyond The Dark Era
- Gold Barz
- · Replies 4 ·
Graduate Black Hole: Infinite Density, Infinite Buoyancy?
- Ryan H
- · Replies 7 ·
Graduate Is Our Understanding of Dark Matter and Dark Energy Based on Flawed Assumptions?
- Louis Cypher
- · Replies 2 ·
Graduate CMB, Sky Surveys, & Computational Cosmology
- saltydog
- · Replies 7 ·
Undergrad What are the smallest orbital masses that can exist in space?
- Glenn
- · Replies 16 ·
Graduate What is the nature of baryonic dark matter in Galactic Blobs?
- Garth
- · Replies 13 ·
Undergrad Question regarding Supernova SN1987
- Oblivion
- · Replies 4 ·
Undergrad Was the sun ever a blue star in the early stages of its life?
- Bladibla
- · Replies 17 ·
Undergrad Save the Hubble: Unmanned Rocket Solution
- marrsc
- · Replies 9 ·
Graduate Uncovering the Mysteries of the Universe: Questions, Answers, and Theories
- wolram
- · Replies 3 ·
Undergrad The largest explosion ever seen in space
- Chronos
- · Replies 8 ·
Graduate Spacetime interval formula - what's the d?
- NanakiXIII
- · Replies 8 ·
Graduate Researching Super-galactic Plane & Ancient Cosmology
- Graham Fox
- · Replies 7 ·
High School Is Moisture Harmful to Telescope Lenses in Cold Weather?
- redrum781
- · Replies 2 ·
Undergrad What Existed Before the Big Bang?
- sero
- · Replies 28 ·
Graduate Couldn't the end of spacetime cause spacetime?
- J_desu101
- · Replies 12 ·
Graduate Escape from the Universe: Michio Kaku
- Ivan Seeking
- · Replies 11 ·
Undergrad Long Lost Star Catalog Found in Plain Sight
- Ivan Seeking
- · Replies 2 ·
Has the Tsunami Changed Our Pole Star?
- vinee
- · Replies 2 ·
Graduate Giant Galactic Blobs: Uncovering Dark Matter?
- Garth
- · Replies 39 ·
Graduate Is dark energy needed in a perturbed universe.
- wolram
- · Replies 7 ·
Graduate What Causes the Bright Streaks on Saturn's Moon Titan?
- Phobos
- · Replies 9 ·
Graduate Is the Universe Losing Mass Due to Heat Loss and Dark Energy Expansion?
- Les Sleeth
- · Replies 17 ·
Hubble fix-up funds cut (MSN 21 Jan)
- marcus
- · Replies 9 ·
Huygens Office Pool Bets: Friday's Options
- DaveC426913
- · Replies 73 ·
High School Velocity of a galaxy, is it the rotating speed around itself?
- A_I_
- · Replies 1 ·
High School What Causes Earth's Tilt on Its Axis?
- jjjsarnis
- · Replies 4 ·
Graduate What is the Mass-Luminosity Relationship for Stars?
- abyssoft
- · Replies 1 ·
Graduate The Big Bang & Its Mysterious Origins: Seeking Thoughts & Ideas
- Mr_Euchre
- · Replies 6 ·
Undergrad Where are the solar systems like our own?
- timken
- · Replies 5 ·
Graduate Antimatter in Space: How Could It Exist?
- z-component
- · Replies 2 ·
Undergrad Are Cosmic Rays Particles or Waves?
- Glenn
- · Replies 12 ·
Stargazing Neutrino Telescope Report: Astrophysics & Cosmology Working Group
- Chronos
- · Replies 1 ·
Graduate What Are the Radiation Levels Inside and Outside Earth's Belts?
- reaper
- · Replies 13 ·
High School Universe Expansion: How Does It Work?
- woz
- · Replies 6 ·
The Unending Universe: What Comes Next?
- tph666
- · Replies 1 ·
Graduate Bekenstein's rival to Dark Matter
- marcus
- · Replies 9 ·
Have you seen new images of Titan?
- somy
- · Replies 3 ·
Undergrad Create Artificial Atmosphere: Pros & Cons
- EngTechno
- · Replies 2 ·
Undergrad Measuring the rotation speed of Io
- Link
- · Replies 5 ·
Graduate Calculating E or M from a State Vector
- kepler
- · Replies 18 ·
Undergrad Doppler effect and color of stars
- nseth1
- · Replies 10 ·
Graduate Solving Math Problem: Get Help from Our Dudes - Kevin
- homology
- · Replies 5 ·
High School Deep Impact: NASA's Mission to Smash a Comet on the Fourth of July
- Orion1
- · Replies 1 ·
High School How does the Earth's atmosphere affect the perception of color in space?
- Kerrie
- · Replies 15 ·
Successful launch of Deep Impact
- Phobos
- · Replies 4 ·
Graduate Topology & Universe Evolution: Finite or Infinite Age?
- ryokan
- · Replies 12 ·
Graduate Black Holes: Compression of Mass & Movement at Absolute Zero
- UrbanXrisis
- · Replies 13 ·
Graduate What Role Do Shock Waves Play in Star Formation from Interstellar Clouds?
- nobunaga84
- · Replies 2 ·
Astronomers reveal biggest stars yet seen
- Chronos
- · Replies 2 ·
Undergrad Apogee & Perigee: What Does "a" Stand For?
- neiliam
- · Replies 2 ·
High School Will We Find Extraterrestrial Life Within the Next Twenty Years?
- Ivan Seeking
- · Replies 19 ·
High School What is a Main Sequence and Why is it Important for Stars?
- Mk
- · Replies 5 ·
Graduate Neutron Star Matter & Planet X: What Could Be Lurking Closer?
- errorist
- · Replies 30 ·
Graduate Non-linear universe and thoughts on conciousness
- DJmaux
- · Replies 2 ·
The universe is all in our heads
- Rasine
- · Replies 28 ·
New U.S. Plan for Space Exploration
- Evo
- · Replies 17 ·
High School What Makes a Black Hole the Densest Place in the Universe?
- DaveC426913
- · Replies 29 ·
Undergrad How Will the Universe End? Big Crunch Theory
- UrbanXrisis
- · Replies 47 ·
High School Friday the 13th, 2029? The odds of impact
- Ivan Seeking
- · Replies 36 ·
Undergrad Big Bang: How Did the Energy Get There?
- Chrono
- · Replies 9 ·
Graduate Under what conditions does star bifurcation occur?
- Loren Booda
- · Replies 3 ·
Undergrad Terrestrial, asteroidal and gaseous
- Loren Booda
- · Replies 3 ·
Graduate Universe is 4% baryonic, 23% Dark matter, 73% Dark energy?
- Glenn
- · Replies 3 ·
High School What are the best resources for studying NGC and Messier objects?
- A_I_
- · Replies 1 ·
Graduate Gravitational Energy: Why Negative?
- ben_jamin
- · Replies 3 ·
Undergrad Pulsar Death: What Happens When a Pulsar Dies
- Vale1219
- · Replies 5 ·
Will 2005 bring stunning images of the moon Titan?
- Ivan Seeking
- · Replies 1 ·
Graduate Varying Expansion Rates for Solar System
- Wave's_Hand_Particle
- · Replies 1 ·
Graduate Testing cosmology, without assuming GR?
- Nereid
- · Replies 15 ·