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 Quantisation of light and Doppler effect
- Vibin Narayanan
- · Replies 4 ·
High School Will Voyager 2 Pass Sirius While Orbiting the Milky Way?
- lifeonmercury
- · Replies 3 ·
Undergrad If there is life on Mars should people stay home?
- BWV
- · Replies 17 ·
Stargazing Another supermoon to observe/photo
- davenn
- · Replies 1 ·
High School Weird quantum property of empty space?
- wolram
- · Replies 2 ·
High School Research Ideas For High School Student (Astrophysics/Cosmology)
- Quds Akbar
- · Replies 12 ·
Undergrad Inflation and expansion of the universe
- phtdegroot
- · Replies 1 ·
High School Cosmological constant vis-a-vis dynamical vacuum: bold challenging the ΛCDM
- wolram
- · Replies 5 ·
Undergrad Is Dark Matter the Key to Understanding the Cosmos?
- Pedraam
- · Replies 13 ·
Undergrad How big and how old is the Universe?
- wwoollyyhheeaa
- · Replies 35 ·
High School Is the Cosmological Red Shift Evidence of Time Slowing Down?
- Bill69
- · Replies 16 ·
High School Are inflatons the same as fewer gravitons?
- Pjpic
- · Replies 1 ·
High School The Semi-Major Axis of Binary Stars
- Tom MS
- · Replies 4 ·
Undergrad Percent of stars in our galaxy that belong to clusters?
- Abdul.119
- · Replies 2 ·
High School Can we use technology to view the past through stars?
- Hena Adlakha
- · Replies 3 ·
Graduate What is the Current Status of Cyclic Cosmology and its Relation to M-Theory?
- Jim
- · Replies 2 ·
Undergrad Can the information of the whole universe change?
- friend
- · Replies 3 ·
Undergrad Calculating the mass of a galaxy bulge
- Jules Winnfield
- · Replies 1 ·
High School Neutron Stars and Angular Momentum
- lavinia
- · Replies 26 ·
Undergrad Why are craters on the Moon nearly all circular?
- sophiecentaur
- · Replies 16 ·
High School Is the smooth dark matter deBroglie's subquantic medium?
- Dee Flont
- · Replies 16 ·
Undergrad How do I compare a model to logarithmic data?
- Jules Winnfield
- · Replies 3 ·
High School Trying to study the major constellations
- lifeonmercury
- · Replies 5 ·
Undergrad How is the arrow of time defined?
- hailzeyy
- · Replies 52 ·
High School Mass of Sun/stars (elemental/molecular vs. plasma)
- hollowman
- · Replies 6 ·
High School So I don't understand moon eclipses
- farolero
- · Replies 22 ·
Graduate Gravitational waves in warm inflation
- shinobi20
- · Replies 3 ·
Undergrad Scale of a in MOND and cosmological constant
- kodama
- · Replies 2 ·
Stargazing Can Pluto be seen with amateur telescopes?
- Andy Resnick
- · Replies 2 ·
High School Creating Universe from "Nothing": Astrophysicists Debate
- Adamchiv
- · Replies 4 ·
Undergrad Chemical Life Possible in Brown Drafw Atmospheres?
- BillTre
- · Replies 1 ·
High School Galaxy Clusters, Masses and Radius
- Jules Winnfield
- · Replies 1 ·
High School Why do we still see cosmic background radiation
- SanderStols
- · Replies 8 ·
Undergrad Does time dilation prevent event horizon formation?
- Petr Matas
- · Replies 22 ·
High School What is the Hoyle State of Carbon and How Does it Contribute to Star Fusion?
- lavinia
- · Replies 12 ·
Undergrad Can a gravitational wave (GW) propagate in a flat universe?
- grauitate
- · Replies 9 ·
Graduate Flatness Problem Differential Equation
- gchmh
- · Replies 1 ·
High School Can Fuzzball Theory Replace Black Hole Singularity?
- wolram
- · Replies 1 ·
Undergrad Converting galactical coordinates to horizontal/geographical coordinates
- Tegalad
- · Replies 5 ·
High School Progress direction of the Aldebaran occultation by the moon
- EnigmaticField
- · Replies 2 ·
Graduate Space Travel: Overcoming Cosmic Radiation Challenges
- wolram
- · Replies 31 ·
Undergrad How to extract dark matter mass from a hydrostatic study
- Jules Winnfield
- · Replies 1 ·
Undergrad Solving the Andromeda Problem: A Newbie's Guide
- Adamchiv
- · Replies 12 ·
High School What Lies Beyond Our Understanding of the Cosmos?
- wolram
- · Replies 8 ·
High School Cold or warm dark matter or a mixture
- wolram
- · Replies 1 ·
Undergrad Sight and light travel are not the same.
- Tim Layton
- · Replies 3 ·
High School Can Anything Survive a Black Hole's Gravitational Pull?
- AlkamlBan
- · Replies 12 ·
High School Is Electromagnetic Radiation a Key Factor in Intergalactic Space Expansion?
- stoomart
- · Replies 30 ·
High School How do we study space-time singularities?
- Pbody101
- · Replies 11 ·
Undergrad Could Light Cones Actually Curve Inward Towards the Big Bang?
- Edgar L Owen
- · Replies 5 ·
High School Mars' Global Sandstorm: Causes and Effects
- Singlau
- · Replies 4 ·
Undergrad Could Anisotropic Expansion Explain the Dark Matter Effect?
- Edgar L Owen
- · Replies 6 ·
Where Can I See the Milky Way Near Washington DC?
- somebodyelse
- · Replies 7 ·
High School Huge amounts of water ice found on Mars
- mfb
- · Replies 3 ·
Undergrad Euclidean differential number counts of supernovae
- resurgance2001
- · Replies 6 ·
High School Early state of Universe and the "size" of Universe
- Mohd Abdullah
- · Replies 17 ·
Undergrad Black Hole Formation: Fermion Pressure & Neutron Stars
- kent davidge
- · Replies 14 ·
High School Can we build a four dimensional compass?
- SleepDeprived
- · Replies 4 ·
Undergrad How do cosmologists view loop quantum cosmology?
- kodama
- · Replies 4 ·
High School How to measure the amount of gravitational lensing?
- exmarine
- · Replies 9 ·
Undergrad System simplification through state space
- Guillem
- · Replies 2 ·
High School What could explain the existence of The Great Attractor?
- rrw4rusty
- · Replies 9 ·
Undergrad Why is the Primordial Power Spectrum Defined as P(k) = (k^3)/(2π^2)|w_k|^2?
- shinobi20
- · Replies 3 ·
High School Is time dilation accounted for in calculating expantion
- JTP3167
- · Replies 11 ·
Undergrad Objective classification of spiral galaxies
- henrco
- · Replies 1 ·
High School If energy is created with expansion and it has no limit....?
- Noduagga
- · Replies 17 ·
High School Why gas clouds collapse if the forces are conservative?
- fbs7
- · Replies 15 ·
Undergrad Are Red Dwarfs Home to Earth-Sized Water Worlds?
- |Glitch|
- · Replies 23 ·
Stargazing North American nebula from this past summer
- spark802
- · Replies 3 ·
High School If an object runs an infinite distance in universe....?
- Noduagga
- · Replies 5 ·
Undergrad RA and declination of Sun & phase of Moon program
- Jadaav
- · Replies 2 ·
High School Supervoid/Cold Spot evidence of Hawking radiation?
- pittsburghjoe
- · Replies 9 ·
Undergrad Collapsing Nebulae: Outward Force of Gas Explained
- Pauly doyle
- · Replies 2 ·
Stargazing Supermoon Monday: Closest Approach in 70 Years
- hagar
- · Replies 30 ·
Undergrad Could Space-Time Curvature Enable Time Loops?
- petrushkagoogol
- · Replies 4 ·
Stargazing Dust on the Mirror: Is Cleaning Worth the Risk?
- sophiecentaur
- · Replies 19 ·
High School Are Primordial Black Holes the Key to Dark Matter?
- wolram
- · Replies 2 ·
Stargazing Is Your Camera's Sensor CCD or CMOS?
- Andy Resnick
- · Replies 26 ·
High School Flatlanders in the 3rd dimension "Hyperspace"
- ChrisisC
- · Replies 11 ·
Undergrad Why exactly does the ocean bulge on both sides of the Earth?
- vector
- · Replies 7 ·
Undergrad How do inflatons and gravity interact?
- Pjpic
- · Replies 5 ·
High School Unruh & Hawkins Radiation: A Comparative Analysis
- backward
- · Replies 3 ·
Undergrad Unraveling the Mystery of Matter-Antimatter Asymmetry in the Early Universe
- LightAmpzarus
- · Replies 2 ·
High School When are we "trailing" the Sun in its galactic revolution?
- xpell
- · Replies 7 ·
Undergrad Dark Energy: How Can ~73% Of Universe Exist?
- Bradfordly1
- · Replies 6 ·
High School Is it possible to visualize the big bang?
- SamRoss
- · Replies 11 ·
High School Does antimatter fit into the standard model
- wolram
- · Replies 17 ·
High School Can entropy be measured in a singularity of infinite density?
- Feeble Wonk
- · Replies 12 ·
Insights A Poor Man's CMB Primer. Part 2: Bumps on a Blackbody - Comments
- bapowell
- · Replies 15 ·
Undergrad Why is the ISS at a 51.6 degree orbital inclination?
- Jonathan Scott
- · Replies 2 ·
Undergrad China launches X-ray Pulsar NAVigation satellite
- arabianights
- · Replies 1 ·
Undergrad Is Constant Mass Density in the Universe Linked to the Casimir Effect?
- Esfand Yar Ali
- · Replies 2 ·
Undergrad Are all planets in our Solar System in the same plane?
- petrushkagoogol
- · Replies 6 ·
Undergrad Can Time be Measured Absolutely w/ SNe Ia Near a Black Hole?
- Doctor Strange
- · Replies 24 ·
Undergrad Realistic coasting cosmology from the Milne model
- Moncy Vilavinal John
- · Replies 12 ·
Undergrad Converting Planck data for spherical projection
- localstarlight
- · Replies 3 ·
Undergrad Revolutionize Space Travel with Innovative Vacuum Launch Method
- udtsith
- · Replies 10 ·
Undergrad Dark Matter PBHs: Theoretical and Experimental Evidence Against Axions and WIMPs
- wolram
- · Replies 24 ·
Graduate Velocity Dispersion: Meaning & Difference Explained
- J Azeez
- · Replies 2 ·
High School Rosetta's comet mission discussion thread
- marcus
- · Replies 205 ·