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Astronomy, Astrophysics, Cosmology Forum

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.

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Graduate Escaping Black Holes: Questions & Answers

Apr 5, 2011 · Replies 6 · Apr 5, 2011

Replies: 6

Views: 14K

Graduate Why artificial gravity is not possible?

Jun 25, 2010 · Replies 156 · Apr 5, 2011

6

Replies: 156

Views: 40K

Graduate Star and planet formation according to the 2nd Law of Thermodynamics

Mar 27, 2011 · Replies 3 · Apr 5, 2011

Replies: 3

Views: 6K

Graduate Creating an Artificial Supernova

Mar 27, 2011 · Replies 11 · Apr 5, 2011

Replies: 11

Views: 8K

Graduate Understanding Boltzman Equation: Probability of Energy in an Ideal Gas

Mar 7, 2011 · Replies 3 · Apr 4, 2011

Replies: 3

Views: 2K

Graduate Do Singularities Prove Actual Infinities Exist?

Apr 4, 2011 · Replies 6 · Apr 4, 2011

Replies: 6

Views: 3K

Stargazing Will Ultra Advanced Telescopes Enable Real-Time Planetary Surface Imaging?

Apr 4, 2011 · Replies 3 · Apr 4, 2011

Replies: 3

Views: 3K

Undergrad Could a life made of antimatter interact with a life made of matter?

Mar 15, 2011 · Replies 18 · Apr 4, 2011

Replies: 18

Views: 15K

Graduate Is the Hubble Deep Field evidence for inflation in the early universe?

Apr 1, 2011 · Replies 4 · Apr 4, 2011

Replies: 4

Views: 3K

Graduate Are Black Holes Matter Sprinklers?

Mar 1, 2011 · Replies 30 · Apr 4, 2011

2

Replies: 30

Views: 6K

Graduate Destroy a World: Methods & Energy Requirements

Mar 27, 2011 · Replies 16 · Apr 4, 2011

Replies: 16

Views: 5K

Stargazing Pleasure of owning a telescope a telescope

Feb 20, 2011 · Replies 2 · Apr 4, 2011

Replies: 2

Views: 2K

Graduate Plutonium - the last ironic trace of civilization?

Mar 31, 2011 · Replies 12 · Apr 3, 2011

Replies: 12

Views: 5K

Graduate Is computer simulation the simplest explanation of our universe?

Mar 31, 2011 · Replies 4 · Apr 3, 2011

Replies: 4

Views: 3K

High School The Universal Gravitational Constant G

Apr 3, 2011 · Replies 2 · Apr 3, 2011

Replies: 2

Views: 3K

Graduate What fields have the hardest papers to read?

Mar 8, 2011 · Replies 7 · Apr 3, 2011

Replies: 7

Views: 3K

Does the Supermoon Look Different Depending on Geographical Location?

Mar 21, 2011 · Replies 9 · Apr 2, 2011

Replies: 9

Views: 4K

Graduate Orbital elements within a gravity simulator problem

Mar 30, 2011 · Replies 7 · Apr 2, 2011

Replies: 7

Views: 5K

Graduate Milankovitch 100,000 years cycle problem

Mar 25, 2011 · Replies 10 · Apr 2, 2011

Replies: 10

Views: 3K

Graduate Could Heat Radiation Solve the Pioneer Anomaly?

Apr 2, 2011 · Replies 2 · Apr 2, 2011

Replies: 2

Views: 3K

Graduate Light speed and time in intergalactic space

Apr 2, 2011 · Replies 2 · Apr 2, 2011

Replies: 2

Views: 3K

Undergrad Age of Universe: 13.7B Years & Cosmologist Qs

Mar 31, 2011 · Replies 15 · Apr 2, 2011

Replies: 15

Views: 3K

Graduate YAGQ (Yet Another Gravity Query)

Mar 19, 2011 · Replies 6 · Apr 1, 2011

Replies: 6

Views: 3K

Graduate The True Nature of Hawking Radiation

Feb 28, 2010 · Replies 20 · Apr 1, 2011

Replies: 20

Views: 5K

Graduate Roger Penrose's Crazy Idea on the Big Bang

Mar 30, 2011 · Replies 8 · Apr 1, 2011

Replies: 8

Views: 4K

High School Is our sun part of a star cluster?

Mar 31, 2011 · Replies 5 · Apr 1, 2011

Replies: 5

Views: 20K

Graduate Mean Equinox J2000.0: Confirm Ecliptic Plane Intersection

Apr 1, 2011 · Replies 1 · Apr 1, 2011

Replies: 1

Views: 6K

Graduate How does the universe move beyond PI?

Mar 31, 2011 · Replies 1 · Mar 31, 2011

Replies: 1

Views: 2K

Undergrad Cold Welding: Can Asteroids Fuse?

Mar 28, 2011 · Replies 6 · Mar 31, 2011

Replies: 6

Views: 13K

Undergrad Question: Normalforce (in the universe)?

Mar 31, 2011 · Replies 5 · Mar 31, 2011

Replies: 5

Views: 2K

Graduate Neutron Star vs Earth - Effects of a Collision

Jun 30, 2010 · Replies 27 · Mar 31, 2011

Replies: 27

Views: 15K

Graduate What Do Epoch J2000.0 Orbital Elements Tell Us About Earth's Orbit?

Nov 21, 2009 · Replies 4 · Mar 31, 2011

Replies: 4

Views: 6K

Undergrad Measuring Parallax Angle to the Method

Mar 31, 2011 · Replies 1 · Mar 31, 2011

Replies: 1

Views: 3K

Undergrad Sky seen from a planet orbiting a star in intergalactic void

Feb 6, 2011 · Replies 7 · Mar 31, 2011

Replies: 7

Views: 7K

Graduate Escape from a black hole with another black hole?

Mar 7, 2011 · Replies 17 · Mar 31, 2011

Replies: 17

Views: 5K

Graduate Radio Astronomy Cold Load Question

Mar 30, 2011 · Replies 2 · Mar 30, 2011

Replies: 2

Views: 4K

Graduate Quantum Jitter and 120 Magnitude Prediction

Mar 27, 2011 · Replies 12 · Mar 30, 2011

Replies: 12

Views: 4K

Graduate Planck Mission and M-Theory Cosmology

Mar 28, 2011 · Replies 5 · Mar 30, 2011

Replies: 5

Views: 3K

Graduate CMB Radiation from Big Bang? Why not dark energy?

Mar 28, 2011 · Replies 7 · Mar 30, 2011

Replies: 7

Views: 4K

Graduate The Incredible Advances in Cosmology of the Last Decade

Mar 28, 2011 · Replies 8 · Mar 30, 2011

Replies: 8

Views: 3K

Undergrad Introduction and Questions about Asteroid Belt/Jovians

Mar 15, 2011 · Replies 6 · Mar 30, 2011

Replies: 6

Views: 4K

Graduate Can Moons and Exoplanets Have Ring Systems?

Mar 19, 2011 · Replies 3 · Mar 30, 2011

Replies: 3

Views: 4K

Undergrad The Basics Regarding : Planetary Orbits and Whatnot

Mar 13, 2011 · Replies 8 · Mar 30, 2011

Replies: 8

Views: 4K

Undergrad How quickly did American researchers get data from Soviet probes like Venera?

Mar 27, 2011 · Replies 1 · Mar 30, 2011

Replies: 1

Views: 3K

Undergrad Age of Universe: 13.7 Billion Years | How is it Calculated?

Mar 28, 2011 · Replies 7 · Mar 30, 2011

Replies: 7

Views: 5K

High School Why Does the Milky Way Appear as a Streak in the Night Sky?

Mar 19, 2011 · Replies 5 · Mar 30, 2011

Replies: 5

Views: 6K

Undergrad Question about recent NASA artical

Mar 29, 2011 · Replies 1 · Mar 29, 2011

Replies: 1

Views: 2K

Undergrad How Are Nebular Images Composed?

Mar 29, 2011 · Replies 2 · Mar 29, 2011

Replies: 2

Views: 3K

Undergrad Need Help Finding Information for Article

Mar 29, 2011 · Replies 2 · Mar 29, 2011

Replies: 2

Views: 2K

Undergrad Universe Expansion: What Force Triggered the Big Bang?

May 24, 2010 · Replies 10 · Mar 29, 2011

Replies: 10

Views: 13K

Undergrad Approximating Ellipse Orbits with Newton's Law

Mar 20, 2011 · Replies 6 · Mar 29, 2011

Replies: 6

Views: 4K

High School How did moluculair oxygen devoleped on Mercury?

Mar 29, 2011 · Replies 7 · Mar 29, 2011

Replies: 7

Views: 4K

Undergrad What Was the Initial Size of the Big Bang?

Mar 29, 2011 · Replies 1 · Mar 29, 2011

Replies: 1

Views: 10K

Graduate Is 13 Billion Years Enough for Carbon Abundance in the Universe?

Mar 26, 2011 · Replies 10 · Mar 29, 2011

Replies: 10

Views: 6K

Graduate Question about theory of expanding universe

Mar 28, 2011 · Replies 5 · Mar 29, 2011

Replies: 5

Views: 3K

Undergrad Expansion of the Universe: Is There a Way to Tell?

Mar 28, 2011 · Replies 5 · Mar 29, 2011

Replies: 5

Views: 2K

Undergrad Why Don't Jet Airplanes Heat Up Like Probes Re-entering Earth's Atmosphere?

Mar 25, 2011 · Replies 10 · Mar 29, 2011

Replies: 10

Views: 11K

Graduate A question for people smarter than myself 8)

Mar 28, 2011 · Replies 15 · Mar 28, 2011

Replies: 15

Views: 3K

Graduate Relativistic Mass and high relative Velocity of distant galaxies

Mar 10, 2011 · Replies 22 · Mar 28, 2011

Replies: 22

Views: 6K

Graduate How Do Supernovae Lead to Black Hole Formation?

Mar 25, 2011 · Replies 2 · Mar 28, 2011

Replies: 2

Views: 5K

Graduate Is it Possible to Escape a Black Hole?

Mar 9, 2011 · Replies 21 · Mar 28, 2011

Replies: 21

Views: 5K

Undergrad Why do the lowest tides follow the full moon by a few days?

Mar 20, 2011 · Replies 9 · Mar 28, 2011

Replies: 9

Views: 9K

Graduate Space time is not phisical object

Mar 26, 2011 · Replies 25 · Mar 28, 2011

Replies: 25

Views: 6K

Undergrad Instant communication between great distances?

Mar 23, 2011 · Replies 4 · Mar 27, 2011

Replies: 4

Views: 3K

Undergrad Jovian planet with breathable oxygen atmosphere.

Feb 6, 2011 · Replies 30 · Mar 27, 2011

2

Replies: 30

Views: 18K

Graduate Program for Supernova Data Fitting

Mar 23, 2011 · Replies 3 · Mar 27, 2011

Replies: 3

Views: 2K

Graduate Could we be living in a black hole?

Mar 20, 2004 · Replies 19 · Mar 27, 2011

Replies: 19

Views: 12K

Graduate Taking issue with random walk of photon in star

Mar 24, 2011 · Replies 22 · Mar 27, 2011

Replies: 22

Views: 6K

Graduate Does expansion of spacetime also stretch amplitude of light waves?

Mar 27, 2011 · Replies 3 · Mar 27, 2011

Replies: 3

Views: 4K

Graduate Does the Universe Have an Edge or Boundary?

Mar 24, 2011 · Replies 5 · Mar 27, 2011

Replies: 5

Views: 9K

Graduate What is the truth about radiation pressure in stars?

Mar 8, 2011 · Replies 43 · Mar 27, 2011

2

Replies: 43

Views: 22K

Graduate Phase-Space volume V - Roger Penrose

Mar 19, 2011 · Replies 2 · Mar 27, 2011

Replies: 2

Views: 7K

Graduate Do redshifts really indicate expansion of the universe?

Feb 10, 2011 · Replies 35 · Mar 26, 2011

2

Replies: 35

Views: 7K

Graduate My conversion with someone regarding cosmology, conclusion included

Mar 21, 2011 · Replies 3 · Mar 26, 2011

Replies: 3

Views: 2K

Graduate 12 year old savant provides possible debunking of Big Bang theory.

Mar 25, 2011 · Replies 3 · Mar 25, 2011

Replies: 3

Views: 6K

Graduate The Big Bang Theory: Was There No Space?

Sep 14, 2010 · Replies 81 · Mar 25, 2011

3

Replies: 81

Views: 22K

Graduate Is BEC still considered a viable dark matter candidate.

Mar 24, 2011 · Replies 2 · Mar 25, 2011

Replies: 2

Views: 3K

Graduate Equation of state for electron degenerate matter

Mar 25, 2011 · Replies 1 · Mar 25, 2011

Replies: 1

Views: 3K

Graduate Static spacetime as static universe

Mar 22, 2011 · Replies 7 · Mar 25, 2011

Replies: 7

Views: 5K

Undergrad Queston about the darkness of the universe

Mar 24, 2011 · Replies 10 · Mar 25, 2011

Replies: 10

Views: 2K

Graduate Do the conditions created by the LHC accurartely simulate the big bang?

Mar 23, 2011 · Replies 6 · Mar 24, 2011

Replies: 6

Views: 3K

High School Is Cosmology the Same as Cosmic Rays?

Mar 24, 2011 · Replies 2 · Mar 24, 2011

Replies: 2

Views: 2K

Graduate Is Dimensionality Frame-Dependent in Spacetime Theories?

Mar 19, 2011 · Replies 2 · Mar 24, 2011

Replies: 2

Views: 3K

Graduate Galaxies travelling away from each other faster than light

Mar 24, 2011 · Replies 5 · Mar 24, 2011

Replies: 5

Views: 3K

Graduate Black holes can be characterized by their event horizons.

Mar 24, 2011 · Replies 1 · Mar 24, 2011

Replies: 1

Views: 2K

Graduate Planck CMB map - what to expect?

Mar 23, 2011 · Replies 2 · Mar 24, 2011

Replies: 2

Views: 3K

Undergrad Understanding Cosmic Distances and Time: A Question on Stellar Measurements

Mar 23, 2011 · Replies 12 · Mar 23, 2011

Replies: 12

Views: 3K

Graduate Will CMB ever stop being detected on Earth

Mar 22, 2011 · Replies 7 · Mar 23, 2011

Replies: 7

Views: 4K

Graduate Why is Ice More Prevalent in Comets than in Early Planetary States?

Mar 20, 2011 · Replies 2 · Mar 23, 2011

Replies: 2

Views: 12K

Graduate Big-Bang & Inflation | R.K. Thakur | General Physics

Mar 21, 2011 · Replies 3 · Mar 23, 2011

Replies: 3

Views: 3K

Graduate Thermal statistics in the hot universe

Mar 22, 2011 · Replies 1 · Mar 23, 2011

Replies: 1

Views: 2K

Graduate Could a black hole be akin to a tornado in a vacuum?

Mar 22, 2011 · Replies 2 · Mar 23, 2011

Replies: 2

Views: 3K

Graduate Is there a quanta associated with dark energy?

Mar 20, 2011 · Replies 1 · Mar 23, 2011

Replies: 1

Views: 2K

Undergrad Is the Net Flux from an Isotropic Source Zero?

Mar 22, 2011 · Replies 1 · Mar 22, 2011

Replies: 1

Views: 4K

Undergrad Order and harmony vs disorder and chaos.

Mar 18, 2011 · Replies 6 · Mar 22, 2011

Replies: 6

Views: 7K

M Sunday Morning Thought: Could the Universe Be Rotating?

Mar 20, 2011 · Replies 10 · Mar 22, 2011

Replies: 10

Views: 4K

Graduate Galaxy Rotation Curves: Impact of Angle on Velocity and Shape

Mar 22, 2011 · Replies 1 · Mar 22, 2011

Replies: 1

Views: 3K

Graduate Reversed Gravity: Antigravity Effects on Spacetime

Mar 21, 2011 · Replies 5 · Mar 22, 2011

Replies: 5

Views: 4K

High School Rainbows in Space: Can We See Light Refraction?

Mar 21, 2011 · Replies 1 · Mar 22, 2011

Replies: 1

Views: 2K

Undergrad How Can Spherical Trigonometry Help Calculate the Sun's Path?

Mar 20, 2011 · Replies 2 · Mar 22, 2011

Replies: 2

Views: 4K

Astronomy

Astronomy is the scientific study of celestial objects and phenomena beyond Earth's atmosphere. It encompasses the observation and analysis of stars, planets, galaxies, and other celestial bodies, as well as the broader exploration of the universe's origins, structure, and evolution.

Astronomers employ a variety of tools, including telescopes, satellites, and advanced instrumentation, to gather data and uncover the mysteries of the cosmos. The field addresses questions about the nature of dark matter, the expansion of the universe, and the potential for extraterrestrial life.

Astronomy not only contributes to our understanding of the cosmos but also inspires wonder and curiosity about the vastness and complexity of the universe we inhabit.

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