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
Graduate Oscillating universe and entropy
- sea100
- · Replies 5 ·
Does MySpace Tom have a public personal email?
- php111
- · Replies 3 ·
Graduate What is the true nature of dark energy and its gravitational effects?
- McHeathen
- · Replies 5 ·
Graduate Usefulness of a 4th spatial dimension
- Pjpic
- · Replies 5 ·
Graduate Understanding Matter and Antimatter Interactions in Black Holes
- Unredeemed
- · Replies 8 ·
Identifying a Bright Celestial Object in FL, USA - Eraniamayomii
- Eraniamayomii
- · Replies 10 ·
High School What is the cause of the rotation of the planets
- Bjarne
- · Replies 3 ·
Graduate If a blackhole contains a singularity, and the big bang was as well
- 4ton Mantis
- · Replies 15 ·
Undergrad 3 questions on Physical Cosmology
- WCOLtd
- · Replies 10 ·
Graduate Is the Universe's Geometry Truly Irrational?
- epkid08
- · Replies 1 ·
Like a diamond in the sky(with video)
- Garth
- · Replies 1 ·
Undergrad Motion of randomly generated stars
- dgroth
- · Replies 5 ·
Graduate Can Two Stars in a Static Universe Ever Collide Due to Gravitational Influence?
- Holocene
- · Replies 16 ·
Undergrad Is Pi a Rational Number in Discrete Space?
- amppatel
- · Replies 16 ·
Graduate Practical cosmology and cosmology physics
- wolram
- · Replies 4 ·
Undergrad How Many Gamma-Ray Bursts Occur in Each Galaxy?
- granpa
- · Replies 5 ·
Graduate Gravitational acceleration for a rotating torus
- stevebd1
- · Replies 5 ·
Graduate Ideas about dark matter and structure
- yuiop
- · Replies 12 ·
Undergrad Is the Pioneer Anomaly really directed towards the Sun ?
- Bjarne
- · Replies 10 ·
Graduate More clues about structure formation (e.g. minimum galaxy mass)
- marcus
- · Replies 7 ·
Undergrad Kepler's Laws, mysterious equation?
- Gib Z
- · Replies 3 ·
Graduate Could CMB Mass Reveal Insights About Dark Matter?
- Ignition
- · Replies 3 ·
Graduate Filaments of Galaxies: Connecting Clusters in Space
- Clairefucious
- · Replies 1 ·
Graduate How Does Dark Energy Affect the Universe's Expansion?
- mysearch
- · Replies 8 ·
Graduate Alternative hypoteses for cosmological redshift
- Ignition
- · Replies 1 ·
Graduate Measuring astronomical distances
- Yoni
- · Replies 3 ·
Graduate What Models Explain the Expansion of the Big Bang?
- Pjpic
- · Replies 3 ·
Graduate What is centimeter continuum emission?
- Sanjay87
- · Replies 1 ·
Undergrad Can arXiv.org's Papers be Simplified for Beginner Physics Students?
- 81+
- · Replies 8 ·
Undergrad What type of camera is needed for solar corona photography?
- Eleftheria
- · Replies 2 ·
Graduate Does the Black Hole Event Horizon violate the Equivalence Principle?
- Sigie
- · Replies 8 ·
Undergrad Is it known what dark matter is?
- Yoni
- · Replies 10 ·
Graduate What is the outer source of anomalous cosmic rays?
- wolram
- · Replies 1 ·
Graduate What is the Difference Between Curved Space and Curved Spacetime?
- mysearch
- · Replies 10 ·
Graduate Would like to know what energy is beyond its definition
- jado
- · Replies 23 ·
Graduate White Hole Postulation: Can it Exist?
- Questman
- · Replies 1 ·
High School We in the Center: Why Are We at the Universe's Center?
- Yoni
- · Replies 11 ·
What Does a Cosmologist Do?
- Xyooj
- · Replies 1 ·
Graduate Black Holes and Galaxy formation
- LowlyPion
- · Replies 7 ·
Graduate Can human being ever find the real basic laws of our universe?
- zergju
- · Replies 23 ·
Undergrad Find the spectra of most elements on line?
- Ignition
- · Replies 1 ·
Graduate Friedman equations from flat FRW universe line element
- Seetesh
- · Replies 2 ·
Graduate Can black holes really destroy information forever?
- marcus
- · Replies 12 ·
Undergrad Basic Question about angle of inclination of a circle
- kungfuscious
- · Replies 1 ·
Stargazing Light Source for Point source fibers - telescope
- makethings
- · Replies 1 ·
Graduate Liveweaver's Paper On Expanding Confusion Is Confusing
- 81+
- · Replies 2 ·
Graduate Dark Matter Exists: Evidence from Colliding Clusters
- neutralseer
- · Replies 4 ·
Undergrad Is the Big Bang Theory the Only Valid Explanation for the Universe's Origin?
- lincs_b
- · Replies 11 ·
Undergrad Dark matter within the solar system
- granpa
- · Replies 1 ·
Graduate Converting Cosmic Super-Voids from Mpc/h to LY - What is the Conversion Factor?
- Barnak
- · Replies 2 ·
High School Black Holes & Wormholes - What Happens?
- athrax
- · Replies 14 ·
Graduate Signal to the end of the universe
- peter kool
- · Replies 2 ·
High School Tides are influenced by the moon
- sparky8406
- · Replies 2 ·
Graduate Did the Big Bang Really End or Are We Still in It?
- ChasSanford
- · Replies 8 ·
Graduate Debunking Dark Energy: Where Does Energy Go in the Universe?
- nottheone
- · Replies 3 ·
Graduate What Causes a Star to Collapse into a Black Hole?
- TalonD
- · Replies 24 ·
Graduate XMM observes evidence of dark energy
- stevebd1
- · Replies 4 ·
Undergrad Is the Universe Expanding or Are Galaxies Moving Apart?
- Born2Perform
- · Replies 93 ·
Undergrad Life in Universe, statistical point of view
- frankdrouin
- · Replies 7 ·
Undergrad Which Weakens More Over Distance: Gravity or Light?
- sysreset
- · Replies 13 ·
Graduate Number of galaxies by type, today
- Barnak
- · Replies 5 ·
Graduate Can the cosmological constant term run in Einstein's equations?
- wolram
- · Replies 1 ·
Graduate A way to see dark matter annihilation (Pamela: cosmic positrons/antiprotons)
- marcus
- · Replies 6 ·
Graduate Galaxie recession vs. universe expansion?
- TalonD
- · Replies 6 ·
Graduate Is the Universe Expanding from a Single Point and Can We Observe Its Center?
- RazLSU
- · Replies 49 ·
Graduate Principles behind galaxy formation
- jostpuur
- · Replies 4 ·
Graduate Can sound waves reveal the history of dark energy in galaxies?
- wolram
- · Replies 12 ·
Graduate Gunn-Peterson effect and the Lyman-alpha forest
- hellfire
- · Replies 3 ·
Graduate What is the newest theory on the missing mass?
- merlinsbyte
- · Replies 5 ·
Graduate Origin of universe/big bang question
- ucf-fisher21
- · Replies 17 ·
Undergrad What Do Hard and Soft Spectrums Really Mean?
- nicksauce
- · Replies 4 ·
Undergrad Basic question about sun's mass & orbit of planets
- Bob Weaver
- · Replies 6 ·
Undergrad Possible rotation of a tidal locked object?
- Gajillian
- · Replies 2 ·
Could Invisible Matter Exist in Different Dimensions?
- Xyooj
- · Replies 1 ·
Graduate Why is matter not uniformly distributed across space time?
- azzkika
- · Replies 2 ·
Graduate Rotations of Earth and other Rigid Bodies
- Peaks Freak
- · Replies 4 ·
Graduate Expansion drains momentum from massive objects
- marcus
- · Replies 6 ·
Undergrad Moon's & Sun's Diameters During Solar Eclipse
- ValenceE
- · Replies 14 ·
Graduate Why is space expanding and matter including galaxies not shrinking?
- WW_III_ANGRY
- · Replies 19 ·
Graduate Hubble+/- 4.3%, is the constant constant ?
- MonstersFromTheId
- · Replies 2 ·
Graduate What Happens If You Travel Beyond the Edge of the Universe?
- Diffy
- · Replies 5 ·
Graduate Is The Definition Of A Singularity Incorrect?
- azzkika
- · Replies 10 ·
Undergrad Gravitation Force on the Earth's Centre
- xCross
- · Replies 2 ·
Graduate What is the speed of gravity and its relationship to light?
- OwenMc
- · Replies 2 ·
Graduate Temperature of the CMB, from WMAP
- Barnak
- · Replies 2 ·
Graduate Why Does the Speed of Light Have a Limit?
- PhanthomJay
- · Replies 28 ·
Graduate Is the energy and mass of the universe constant?
- azzkika
- · Replies 1 ·
Graduate Why Don't Cosmologists Consider Other OUs?
- 81+
- · Replies 13 ·
Graduate String fusion during the begining of our universe?
- Quasar2287
- · Replies 4 ·
Graduate How Does the Cosmological Constant Λ Define the Cosmic Scale of Space-Time?
- stevebd1
- · Replies 2 ·
High School Why cant u go to outer space like an upwards climbing roller coaster?
- eratosthenes2
- · Replies 4 ·
High School Is Matter Composed of Space and Energy?
- jado
- · Replies 3 ·
Undergrad Was the Early Universe Hot?
- John_Mason
- · Replies 7 ·
Graduate Orbit in space (extrasolar planets)
- Silly Lung
- · Replies 3 ·
Graduate Hubble ultra deep field - beyond the big bang
- diondrechsler
- · Replies 45 ·
Favorite books to read on subjects ranging from Astronomy
- Übermensch
- · Replies 37 ·
High School How does the movement of stars compare to the movement of planets
- robno9
- · Replies 12 ·
Graduate What Do 600 Hubble Survey Results Reveal About Cosmic Expansion?
- yuiop
- · Replies 1 ·
Graduate Pliers, pulsars and extreme physics
- Garth
- · Replies 1 ·
Undergrad Why Don't Galaxy Rotations Follow Kepler's Third Law?
- pixel01
- · Replies 3 ·