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
Converting Gaseous Planets Into Matter
- Whitestar
- · Replies 9 ·
High School Question: Mnemonic for classes of stars
- Artermis
- · Replies 5 ·
Graduate What is the White Hole Model of the Universe?
- wolram
- · Replies 6 ·
Graduate Is Light's Terminal Velocity 300,000 km/s?
- questionauthority
- · Replies 5 ·
Graduate Theoretical Physics: Lee Smolin's "The Life of the Cosmos"
- turbo
- · Replies 10 ·
Is the Milky Way Actually a Barred Spiral?
- cscott
- · Replies 4 ·
Graduate Is the overall charge of the universe positive, negative, or neutral?
- darkar
- · Replies 6 ·
Graduate Gamma Ray Bursters: Explaining the Mystery 8 Billion Light Years Away
- Diesel
- · Replies 24 ·
Graduate Could Other Universes Exist in a Multiverse?
- Critical_Pedagogy
- · Replies 11 ·
Graduate Does the 3-body problem have stable solutions?
- kjknohw
- · Replies 2 ·
High School Water ice in crater at Martian north pole
- GOD__AM
- · Replies 1 ·
High School What is the field of view of the Hubble Telescope's planetary camera?
- big man
- · Replies 4 ·
Stargazing Troubleshooting Telescope for Viewing Planets & Stars
- Cladson
- · Replies 7 ·
Graduate 10th Planet resonance with Neptune
- tony873004
- · Replies 3 ·
Where's SpaceTiger? Summer Vacation Update
- tony873004
- · Replies 6 ·
Graduate What is shot noise and how is it estimated in galaxy surveys?
- cosmo_boy
- · Replies 1 ·
High School Three dimension space and one dimension time means
- Caesar_Rahil
- · Replies 4 ·
Perseids a wash-out here :grumpy:
- turbo
- · Replies 6 ·
High School The path of our planetary bodies
- misskitty
- · Replies 25 ·
Graduate Maximizing Velocity Excess: The Power of Perihelion Gravity Assists
- rieman zeta
- · Replies 7 ·
High School What is the fundamental reason for the elliptical shape of orbits?
- cj
- · Replies 27 ·
High School Why Do Planets Rotate Around the Sun Without Crashing?
- Nocturn888
- · Replies 6 ·
Undergrad Law of Two Bodies: Smaller Body Breaks Up
- sahd0w
- · Replies 3 ·
High School What is the Newly Discovered Dwarf Planet Beyond Pluto?
- ohwilleke
- · Replies 21 ·
Stargazing Trouble Using Meade 2114 ATTS Reflector
- Cladson
- · Replies 1 ·
Recent Photos & Data of Martian Moons Phobos & Deimos
- Daminc
- · Replies 3 ·
Which astrophysical journal is the best?
- yu_wing_sin
- · Replies 3 ·
Stargazing Buying a New Telescope and would like some input.
- whatzzupboy
- · Replies 4 ·
FYI - online petition to keep Voyager & Hubble programs going
- Phobos
- · Replies 6 ·
Planetary Alignment on my Date of Birth
- porselin13
- · Replies 10 ·
Does evil help the universe get better?
- lockecole
- · Replies 3 ·
Graduate Big Bang Implosion: The Symmetry of Cosmic Expansion and Collapse
- Loren Booda
- · Replies 3 ·
Graduate Logic, Metaphysics, and the Idea of an Expanding Universe
- quantumdude
- · Replies 7 ·
Graduate The fine tuning problem (all 120 OOM of it)
- Nereid
- · Replies 6 ·
Could Self-Replicating Probes Revolutionize Interstellar Exploration?
- Gold Barz
- · Replies 28 ·
Graduate Dear Phobos, Janus, and Self Adjoint
- turbo
- · Replies 5 ·
High School Can We Really Look Back in Time?
- entropy+time=fun
- · Replies 10 ·
Undergrad How Did the Michelson-Morley Experiment Challenge the Existence of Aether?
- questionauthority
- · Replies 1 ·
Graduate Mass not intrinsic, but emergent.
- turbo
- · Replies 14 ·
Stargazing Can the Arecibo Radio Telescope Eavesdrop on the Entire Galaxy?
- Gold Barz
- · Replies 9 ·
Graduate Can You Imagine a Universe Without Space and Time?
- Curious6
- · Replies 64 ·
Graduate Can No Movement FTL Travel Revolutionize Space Travel?
- AP
- · Replies 3 ·
Undergrad Would a black hole be able to suck-in another blackhole?
- bayan
- · Replies 9 ·
Graduate Is the Universe an Infinite Regression of Black Holes?
- Ulnarian
- · Replies 10 ·
Graduate How Do Stellar Winds Impact the Elemental Composition of Planets?
- Ratzinger
- · Replies 9 ·
Graduate Dark matters seems unlikely to succeed
- yu_wing_sin
- · Replies 32 ·
Undergrad How Old Are Third Generation Stars
- Gold Barz
- · Replies 1 ·
Graduate Is Dark Matter a Macroscopic Manifestation of Quantum Hidden Variables?
- Spin_Network
- · Replies 4 ·
Graduate Is Centripetal Acceleration Relevant in Curved Space-Time?
- andrewcheong
- · Replies 7 ·
High School Meaning of Planet? Just 8 planets?
- woz
- · Replies 5 ·
Undergrad Uneven Cratering of Moon's Surface
- cj
- · Replies 2 ·
Stargazing Views on schimdt Cassegrain telescopes
- Cyclotron
- · Replies 11 ·
Undergrad Cosmology Simulations' softwares
- MathematicalPhysicist
- · Replies 7 ·
Graduate Are Intermediate Mass Black Holes from Population III Stars?
- wolram
- · Replies 1 ·
Graduate Pulsars with irregular periodicity radiation
- MathematicalPhysicist
- · Replies 16 ·
Undergrad Planet discovered in 3-star system
- Astronuc
- · Replies 20 ·
Graduate Gyroscopic Space-Drive: How Does It Work?
- KonradKorzenowski
- · Replies 14 ·
Graduate Universal Expansion: Faster Than Light?
- CBJammin103
- · Replies 3 ·
Colonization Of The Milky Way Inevitable
- Gold Barz
- · Replies 17 ·
A small test for your astronomic study IQ
- yu_wing_sin
- · Replies 1 ·
Graduate Did time and space exist before the Big Bang?
- Rake
- · Replies 6 ·
Graduate Is 10K Resolution Possible for Faster-Than-Light Transmissions?
- Gold Barz
- · Replies 40 ·
Kennedy Space Center Hours?
- Mk
- · Replies 15 ·
Graduate Are Wormholes Possible? How Far From a Possibility Are They?
- vincentm
- · Replies 13 ·
Is Teleportation Really Possible?
- Gold Barz
- · Replies 31 ·
Graduate Why does gravity play a role in the energy of the universe?
- Lacy33
- · Replies 3 ·
Seeing Mars as a Full Moon: A Hoax?
- photon
- · Replies 6 ·
High School The relation between the bermuda triangle and black holes
- Sabine
- · Replies 6 ·
Graduate Polarization of quasar emissions
- turbo
- · Replies 5 ·
Stargazing A telescope orbiting an outer planet?
- Felix83
- · Replies 10 ·
Graduate Comparison of the Mainstream and the Self Creation Freely Coasting models
- Garth
- · Replies 67 ·
Undergrad Does Space Have Mass to Support Swirling Galaxies?
- Pocketwatch
- · Replies 6 ·
Graduate Nucleosynthesis of PopIII Core Collapse Supernovae
- wolram
- · Replies 4 ·
Graduate Neutrino scalar waves travel back and forwards in time
- Lisa!
- · Replies 19 ·
Graduate Do scientists think black holes have singularities
- wolram
- · Replies 18 ·
High School Can a Black Hole create Supernova?
- ludi_srbin
- · Replies 17 ·
Graduate Where Do Black Hole Singularities Send All the Matter They Consume?
- aricho
- · Replies 13 ·
Graduate Where has all the information gone
- wolram
- · Replies 1 ·
Graduate Should We Be Worried About Gravitational Waves?
- wolram
- · Replies 3 ·
High School What do we see first?What Do We See First: The Sun or the Light?
- Paul Wilson
- · Replies 12 ·
Graduate Are New Ideas Important in Physics and Astronomy?
- mcgucken
- · Replies 6 ·
Graduate Understanding the Extended Kalman Filter
- Ultimâ
- · Replies 17 ·
Graduate How Does the Shape of the Milky Way's Dark Halo Influence the 511 keV Line?
- wolram
- · Replies 1 ·
Is everything in the universe connected to eachother?
- PIT2
- · Replies 12 ·
Undergrad How big can red supergiants get and can they be born at that size?
- vincentm
- · Replies 4 ·
Graduate Ptolemy's Shadows: Examining Our Astronomical Perception of Time
- saltydog
- · Replies 3 ·
Graduate Expanding Universe + Rotation - Lost it somewhere
- Unknowing
- · Replies 3 ·
Stargazing Want to see an incredible solar corona photo?
- Labguy
- · Replies 2 ·
Undergrad Where do Compton Recoil Electrons come from?
- laminatedevildoll
- · Replies 1 ·
Graduate Explaining Celestial Body Movement in a Sphere of Particles
- Thor
- · Replies 11 ·
High School What is the Earth's magnetic field and how does it protect us from space debris?
- cbsgorams
- · Replies 7 ·
Graduate Problem of process noise of satellite orbit determination
- whigg_wang
- · Replies 13 ·
Stargazing Which Telescope Should My School Purchase for Our New Observatory?
- GerdankenDonuts
- · Replies 1 ·
Undergrad Explaining the Bands on the Gas Giants: A Combination of Heat and Rotation
- arun_mid
- · Replies 6 ·
Undergrad Will it be hard to find planets with live plate tectonics?
- Gold Barz
- · Replies 2 ·
High School Mystery of Jupiter's Red Dot: Uncovering the Cause
- cbsgorams
- · Replies 2 ·
Graduate Unifying the Robertson-Walker metric
- Loren Booda
- · Replies 2 ·
High School The Big Bang: Matter Creation & Photons
- aricho
- · Replies 5 ·
Stargazing (Telescopes) Certifiably confused.
- dekoi
- · Replies 7 ·
Graduate Gas Giants & Venus: Could They Be One & The Same?
- Andre
- · Replies 1 ·