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 Is a flat or open universe necessarily infinite?
- εllipse
- · Replies 30 ·
Who Here Is In The Rare Earth Camp?
- Gold Barz
- · Replies 7 ·
Graduate Maximum count for mutually bound stars
- Loren Booda
- · Replies 2 ·
Undergrad NBody evaluation, is my model correct?
- crepincdotcom
- · Replies 12 ·
Undergrad Blackhole at the center of each galaxy, think again
- Anomalous
- · Replies 34 ·
Graduate What happens when two black holes meet and merge?
- ASKDodge
- · Replies 4 ·
Graduate Can you return to your starting point by traveling in one direction?
- Mark_W_Ingalls
- · Replies 39 ·
Graduate Should gravitational waves have been detected by now?
- Garth
- · Replies 12 ·
Stargazing What Are the Theoretical Limits on Radio Telescope Size and Resolution?
- gonzo
- · Replies 2 ·
Graduate What does a neutron star look like
- gonzo
- · Replies 1 ·
Graduate Neutron Star Evolution and Possible Blackhole Formation in Proton Star Collapse
- Spin_Network
- · Replies 5 ·
Graduate How Does Quantum Chaos Theory Explain the Big Bang?
- Diesel
- · Replies 3 ·
Graduate Detect planets through mag field?
- japam
- · Replies 2 ·
Undergrad Could Cosmic Background Radiation Hold Clues About the Big Bang?
- BigMacnFries
- · Replies 3 ·
Graduate How Do Masers Explain the Process of Massive Star Formation?
- wolram
- · Replies 3 ·
Where have you travelled virtually in spacetime?
- Loren Booda
- · Replies 1 ·
Graduate Vela-X supernova and carbon dating?
- Andre
- · Replies 6 ·
Graduate Dominant energy condition and superluminal acoustic modes
- ylping
- · Replies 1 ·
Does Big Bang Theory Allow for God's Existence?
- Lisa!
- · Replies 16 ·
Graduate Does BH Mass Boundary Vary with Matter Type?
- wolram
- · Replies 5 ·
Graduate Quasars non cosmological red shift.
- wolram
- · Replies 1 ·
Graduate Eot-Wash sub-mm test inverse square law
- marcus
- · Replies 1 ·
Graduate New Take on SETI: Astro-ph/0506110
- marcus
- · Replies 2 ·
Stargazing Building a telescope mount and have some questions
- Braumin
- · Replies 4 ·
Graduate What is the significance of high redshift black holes for the early universe?
- wolram
- · Replies 6 ·
Graduate Can Humanity Overcome the FTL Barrier?
- guevaramartyr
- · Replies 7 ·
Graduate So Has Virtual Particles Been Proven To Exist?
- Gold Barz
- · Replies 4 ·
Why is the secondary star in Eridanus1 so blue?
- Eridanus1
- · Replies 1 ·
Graduate What are the most-studied topics in astronomy and cosmology by recent paper count?
- ohwilleke
- · Replies 6 ·
Graduate Increasing G during the formation of helium.
- EL
- · Replies 6 ·
Graduate Non-Cosmological Interpretation of Redshift
- SpaceTiger
- · Replies 56 ·
Undergrad Is Dark Matter the Missing Piece in Our Cosmic Puzzle?
- Lisa!
- · Replies 50 ·
High School Can TV Static Detect Cosmic Microwave Background Radiation?
- Mariko
- · Replies 10 ·
Graduate My first post here and a question
- Dannyinjapan
- · Replies 10 ·
Graduate New cosmology from Lorentz and Levi-Civita conservation laws
- wolram
- · Replies 2 ·
Undergrad Are Other Dimension Universes Plausible?
- Gold Barz
- · Replies 9 ·
High School Unlimited Universe: Can We Explain It?
- aceace
- · Replies 3 ·
Graduate Density of the inter-cluster medium
- Garth
- · Replies 9 ·
Undergrad Expansion of the Universe, cop this
- Ryan Lucas
- · Replies 13 ·
High School Discussing quasars and Hubble constant to improve English
- mars2
- · Replies 13 ·
Graduate Metallicity of the WHIM and ICM, and its history
- hellfire
- · Replies 2 ·
Graduate Why doesn't expanding space break objects on Earth?
- Zanket
- · Replies 118 ·
Can You Name All the Moons in Outer Space?
- FreeWill
- · Replies 6 ·
Does US space weapons development trigger an arms race?
- chound
- · Replies 11 ·
Graduate Was Cosmic Recombination Caused by Charge Attraction or Positron Infusion?
- Spin_Network
- · Replies 1 ·
Graduate Why do galaxies rotate faster than their visible mass allows?
- gaugeboson
- · Replies 1 ·
Graduate Why do quasar cores expand at superluminal velocities?
- gaugeboson
- · Replies 1 ·
Graduate Quasar absorption lines and what they reveal
- SpaceTiger
- · Replies 18 ·
Undergrad How Fast Are We Really Moving in the Universe?
- Enkiadu
- · Replies 3 ·
Undergrad Creation of heavy elements: r and s process
- Gideon
- · Replies 3 ·
The Pork Chop Solution: Pondering My Place in Space
- Chronos
- · Replies 4 ·
High School What do the shockwave lines represent in Voyager's exit from the solar system?
- Pengwuino
- · Replies 2 ·
Graduate Hyper Metal-Poor Stars: The First Generation in the Universe?
- wolram
- · Replies 4 ·
Couldn't we use artificial soil to colonize it?
- FreeWill
- · Replies 16 ·
Graduate Quasars are closer, less massive, not as bright.
- wolram
- · Replies 14 ·
High School Where in the solar system could diamonds naturally form?
- MonstersFromTheId
- · Replies 10 ·
Undergrad Need Source Code In c For 2-Bodies Gravitational Problem
- Zaheer Ahmed
- · Replies 6 ·
Graduate N-body simulation gives semicircular orbit instead of ellipse with leap-frog and RK4
- Zaheer Ahmed
- · Replies 19 ·
Undergrad Cleaning a dusty 9-inch reflector mirror without scratching
- sonhouse
- · Replies 5 ·
- Poll
What explains the origin of the universe: creation or eternal cycles?
- Silverbackman
- · Replies 9 ·
Graduate Could a second genesis have occurred on Earth?
- wolram
- · Replies 2 ·
Protecting Astronomers from Space Adverts
- Phobos
- · Replies 3 ·
Graduate Where is Dark Matter Found in the Universe?
- Dr.Brain
- · Replies 6 ·
High School Is There a Center to the Universe?
- icvotria
- · Replies 22 ·
Graduate What methods can detect life in distant galaxies beyond spectroscopy?
- Sunshine
- · Replies 19 ·
High School Kleopatra main asteroid belt between Mars and Jupiter
- wolram
- · Replies 7 ·
High School What Is Pluto? Can We Live There?
- FreeWill
- · Replies 10 ·
Graduate What besides mass warps space?
- j6p
- · Replies 20 ·
Graduate What is the Possibility of White Holes?
- Dr.Brain
- · Replies 5 ·
Undergrad What is the future of USAA in commercial space travel?
- mnowacze
- · Replies 1 ·
High School Does the Moon's Gravity Attract Earth?
- lwymarie
- · Replies 43 ·
Graduate What is the Explanation for the Cosmic Microwave Background Radiation?
- wolram
- · Replies 13 ·
Graduate Why do lensed quasars like the Einstein cross stay point-like?
- turbo
- · Replies 32 ·
Graduate Integration of Superstring Theory into the Big Bang
- samshaikh
- · Replies 1 ·
Graduate HI clouds in the center of the Virgo cluster
- hellfire
- · Replies 0 ·
Graduate Conceptualizing the analogy of gravity
- tourmaline
- · Replies 5 ·
Undergrad Why do most stars lie on the main sequence?
- Baggio
- · Replies 7 ·
Graduate What fuels accelerating expansion of our universe
- spicerack
- · Replies 48 ·
Undergrad What are Non-Spherical Structures in Astronomy?
- ohwilleke
- · Replies 8 ·
Graduate What Happens When the Particle Horizon Exceeds the Event Horizon?
- BzzBzzz
- · Replies 1 ·
Graduate About Eternal Inflation and Spacetime Bubbles
- Curious6
- · Replies 3 ·
Undergrad What is the distance between peaks in this Cassini image?
- Arctic Fox
- · Replies 7 ·
Graduate Does the Sun's core rotate faster or slower than its surface?
- Chronos
- · Replies 6 ·
Graduate Is the Lunar-Precession Theory Flawed?
- quetzalcoatl9
- · Replies 4 ·
Graduate Can three galaxies bound by dark matter be a three body problem?
- kurious
- · Replies 33 ·
High School Spiral Galaxies: 3 Distinguishing Characteristics
- zcapa14
- · Replies 5 ·
Graduate Black Holes - Where does all the matter go
- BenGoodchild
- · Replies 21 ·
Undergrad Did abhas mitra proved that black holes dont exist
- sandesh trivedi
- · Replies 7 ·
Graduate Parallel Universe, 10 dimensions
- Nietsnie
- · Replies 36 ·
Graduate First detection of a black hole being born
- Ivan Seeking
- · Replies 17 ·
What happened to Sean Carroll?
- robphy
- · Replies 6 ·
Graduate Did Iapetus Collide with a Primordial Saturnian Ring?
- wolram
- · Replies 8 ·
Graduate Is Frame Dragging an Example of a Gravity Wave?
- tony873004
- · Replies 8 ·
Graduate Calculate separation of galaxies as a function of time
- gerardo
- · Replies 12 ·
Graduate What If Missing Particles and Stuff Cannot Be Found?
- wolram
- · Replies 97 ·
Can't sleep or the space monkeys will get me?
- bjon-07
- · Replies 11 ·
Undergrad Form and Features of Asteroids and Neutron Stars
- jingles2005
- · Replies 10 ·
High School More precise numbers on 2004MN4 asteroid flyby in 2029
- marcus
- · Replies 2 ·
Undergrad Calculating solar mass using luminosity
- zircher
- · Replies 6 ·