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Astronomy and Astrophysics Forum

Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.

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Graduate Steven Hawking / MKaku. Who's right about Black Holes?

Jul 27, 2004 · Replies 8 · Jul 28, 2004

Replies: 8

Views: 5K

Graduate Black Holes: Comparing Hawking & Kaku Theories

Jul 27, 2004 · Replies 1 · Jul 28, 2004

Replies: 1

Views: 2K

Graduate Observational Difference Between Neutron Star & Black Hole

Jul 28, 2004 · Replies 3 · Jul 28, 2004

Replies: 3

Views: 3K

Graduate Do Black Holes Truly Have Zero-Point Volume Singularities?

Jul 19, 2004 · Replies 4 · Jul 28, 2004

Replies: 4

Views: 5K

UFO Sighting: Is It Real or Imaginary?

Jul 27, 2004 · Replies 2 · Jul 27, 2004

Replies: 2

Views: 3K

Graduate Has Stephen Hawking Solved the Black Hole Information Paradox?

Jul 20, 2004 · Replies 8 · Jul 27, 2004

Replies: 8

Views: 4K

Undergrad Black holes and dark matter holding galaxies together?

Jul 17, 2004 · Replies 9 · Jul 26, 2004

Replies: 9

Views: 6K

Graduate CalTech BH answer contradicts Hawking's

Jul 25, 2004 · Replies 4 · Jul 25, 2004

Replies: 4

Views: 3K

Undergrad Are There Non-Rotating Objects in Space?

Jul 24, 2004 · Replies 2 · Jul 25, 2004

Replies: 2

Views: 3K

Discover the Ultimate Guide: Gravitation by Misner, Thorne, and Wheeler

Jul 23, 2004 · Replies 7 · Jul 25, 2004

Replies: 7

Views: 3K

Graduate How Much Gravity Does a Black Hole Need to Contain Light?

Jul 24, 2004 · Replies 7 · Jul 25, 2004

Replies: 7

Views: 2K

Graduate Time Travel: No spaceships, no wormholes

May 20, 2004 · Replies 27 · Jul 25, 2004

Replies: 27

Views: 6K

Graduate Which force drives the expansion of the universe?

Jun 14, 2004 · Replies 12 · Jul 24, 2004

Replies: 12

Views: 6K

Undergrad Gigantic Black Hole Collision: Andromeda & Milky Way

Jul 22, 2004 · Replies 19 · Jul 24, 2004

Replies: 19

Views: 4K

Graduate Are There Stars with Highly Eccentric Orbits Around the Center of Their Galaxy?

Jul 24, 2004 · Replies 1 · Jul 24, 2004

Replies: 1

Views: 3K

Graduate Did Hawking's Dublin Talk Redefine Quantum Gravity Observables?

Jul 21, 2004 · Replies 8 · Jul 23, 2004

Replies: 8

Views: 3K

Undergrad Cause of Billiard Ball Spin: Celestial Connection?

Jul 22, 2004 · Replies 1 · Jul 23, 2004

Replies: 1

Views: 3K

Graduate Are White Holes the Key to Understanding Black Holes and Quasars?

Jul 20, 2004 · Replies 6 · Jul 23, 2004

Replies: 6

Views: 7K

High School Planet formation DOES happen in slow motion

Jul 21, 2004 · Replies 8 · Jul 22, 2004

Replies: 8

Views: 3K

Undergrad Why Does the Moon Cause Tides despite Sun’s Greater Force?

Jul 19, 2004 · Replies 13 · Jul 22, 2004

Replies: 13

Views: 5K

Graduate Can a small black hole exist inside a larger black hole?

Jul 21, 2004 · Replies 3 · Jul 22, 2004

Replies: 3

Views: 3K

High School Odds of Earth Impact vs Winning Powerball

Jul 13, 2004 · Replies 16 · Jul 22, 2004

Replies: 16

Views: 6K

Undergrad Can Objects Enter a Black Hole from an Angle?

Jul 21, 2004 · Replies 8 · Jul 22, 2004

Replies: 8

Views: 3K

Undergrad Shock Wave in Space: Vacuum or Medium?

Jul 20, 2004 · Replies 4 · Jul 22, 2004

Replies: 4

Views: 4K

Graduate Is the Sun Distorting Earth's Space-Time?

Apr 27, 2004 · Replies 30 · Jul 21, 2004

2

Replies: 30

Views: 6K

Graduate What Does XMM-Newton Reveal About Dark Energy in the X-ray Universe?

Feb 20, 2004 · Replies 167 · Jul 21, 2004

6

Replies: 167

Views: 21K

Graduate Can black holes ever truly disappear?

Jul 14, 2004 · Replies 14 · Jul 20, 2004

Replies: 14

Views: 4K

Graduate Do Black Holes Emit Higgs Particles in Hawking Radiation?

Jul 20, 2004 · Replies 1 · Jul 20, 2004

Replies: 1

Views: 3K

Graduate What Would Happen if a White Hole Collided with a Black Hole?

Jul 9, 2004 · Replies 17 · Jul 20, 2004

Replies: 17

Views: 13K

Graduate Can the Booda Cosmic Isotropy Duality Hypothesis Be Proven?

Jul 20, 2004 · Replies 2 · Jul 20, 2004

Replies: 2

Views: 3K

High School Astronomy Club: A Student's Adventure in Learning

Jul 16, 2004 · Replies 10 · Jul 20, 2004

Replies: 10

Views: 5K

Graduate Is the Universe Truly Infinite and Expanding, or Does It Have Limits?

Jul 15, 2004 · Replies 19 · Jul 19, 2004

Replies: 19

Views: 5K

Undergrad Can Things Really Escape Black Holes?

Jul 17, 2004 · Replies 4 · Jul 18, 2004

Replies: 4

Views: 2K

Hawking Solves Black Hole Mystery

Jul 15, 2004 · Replies 51 · Jul 18, 2004

2

Replies: 51

Views: 11K

Graduate Black hole might crunch the many planets into marble-sized spheres

Jun 28, 2004 · Replies 7 · Jul 18, 2004

Replies: 7

Views: 3K

Graduate Are We Living in a Subuniverse Within a Multiverse?

Jul 17, 2004 · Replies 1 · Jul 17, 2004

Replies: 1

Views: 3K

Graduate Is All Dark Energy Essentially Space?

Jul 12, 2004 · Replies 1 · Jul 16, 2004

Replies: 1

Views: 3K

Graduate Is the Singularity of a Black Hole Real or Theoretical?

Jul 16, 2004 · Replies 1 · Jul 16, 2004

Replies: 1

Views: 4K

Stargazing What Are Cool Research Ideas for a School Radio Telescope Project?

Jul 14, 2004 · Replies 2 · Jul 16, 2004

Replies: 2

Views: 2K

Graduate Is Life an Anti-Entropic Zone in the Fabric of Space/Time?

Jul 16, 2004 · Replies 2 · Jul 16, 2004

Replies: 2

Views: 3K

Graduate Black holes and the Chandrasekhar limit

Jul 13, 2004 · Replies 4 · Jul 16, 2004

Replies: 4

Views: 4K

Graduate Mass and Curved Space: A Question

Jul 15, 2004 · Replies 4 · Jul 16, 2004

Replies: 4

Views: 2K

Graduate Matter distorts dark energy to create space-time

Jul 12, 2004 · Replies 3 · Jul 15, 2004

Replies: 3

Views: 5K

Graduate Do Neutrinos Escape Black Holes Unscathed?

Jul 15, 2004 · Replies 1 · Jul 15, 2004

Replies: 1

Views: 3K

Graduate Is the Universe Truly Infinite and Expanding?

Jul 15, 2004 · Replies 5 · Jul 15, 2004

Replies: 5

Views: 3K

Graduate What if dimensions have different sizes and expand at different rates?

Jul 11, 2004 · Replies 21 · Jul 15, 2004

Replies: 21

Views: 5K

Graduate Moving a spaceship through the aether

Jul 14, 2004 · Replies 1 · Jul 14, 2004

Replies: 1

Views: 2K

Astronomy Riddle: Stand on the Sphere

Jul 4, 2004 · Replies 13 · Jul 14, 2004

Replies: 13

Views: 6K

Graduate Dark Energy & Expansionary Phase

Jul 13, 2004 · Replies 1 · Jul 14, 2004

Replies: 1

Views: 3K

Undergrad Hyperbolic interplanetary transfer

Jul 13, 2004 · Replies 2 · Jul 14, 2004

Replies: 2

Views: 4K

Graduate Is the Universe Collapsing or Expanding?

Jun 29, 2004 · Replies 10 · Jul 13, 2004

Replies: 10

Views: 4K

Graduate Is the Universe Formed from a Giant Star and Black Hole?

Jul 10, 2004 · Replies 8 · Jul 13, 2004

Replies: 8

Views: 3K

What planet/moon would you most like to explore?

Jul 5, 2004 · Replies 15 · Jul 13, 2004

Replies: 15

Views: 7K

Graduate After star explodes it may turn into BH

Jul 11, 2004 · Replies 4 · Jul 12, 2004

Replies: 4

Views: 3K

Graduate Naked Singularity: Is Event Horizon Observed or Hypothetical?

Jul 8, 2004 · Replies 18 · Jul 12, 2004

Replies: 18

Views: 4K

Graduate Two black holes and the event horizon

Apr 21, 2004 · Replies 26 · Jul 11, 2004

Replies: 26

Views: 7K

Graduate LUNA Results Suggest Really Old Stars Exist Despite Popular Models

Jun 28, 2004 · Replies 22 · Jul 10, 2004

Replies: 22

Views: 4K

High School Discover the Fascinating Origins of Earth's Magnetic Field

Jul 10, 2004 · Replies 1 · Jul 10, 2004

Replies: 1

Views: 4K

Graduate Is the Redshift of Distant Objects Due to Expansion or Gravitational Effects?

May 20, 2004 · Replies 46 · Jul 10, 2004

2

Replies: 46

Views: 10K

High School Do Black Holes Rotate and Explode?

Jul 7, 2004 · Replies 6 · Jul 10, 2004

Replies: 6

Views: 2K

Graduate Do black holes have any translational motion?

Jun 30, 2004 · Replies 8 · Jul 10, 2004

Replies: 8

Views: 3K

Undergrad Does the Sun's Changing Mass Affect Its Gravitational Pull on the Solar System?

Jul 7, 2004 · Replies 3 · Jul 9, 2004

Replies: 3

Views: 3K

Undergrad What Determines the Positioning of Protons and Electrons in the Van Allen Belts?

Jul 8, 2004 · Replies 1 · Jul 9, 2004

Replies: 1

Views: 3K

High School Space probe transmiting a pic to Eart

Jul 6, 2004 · Replies 6 · Jul 9, 2004

Replies: 6

Views: 2K

Undergrad What Makes Abell 2029 the Largest Known Galaxy in the Universe?

May 23, 2004 · Replies 7 · Jul 9, 2004

Replies: 7

Views: 5K

Undergrad Why are planetary systems almost complanary?

Jul 4, 2004 · Replies 6 · Jul 8, 2004

Replies: 6

Views: 2K

Graduate A 30 year test of General Relativity

Jul 7, 2004 · Replies 1 · Jul 7, 2004

Replies: 1

Views: 2K

Graduate João Magueijo & John Moffat's Variable Light Speed Theory: Is It Legit?

Jun 29, 2004 · Replies 20 · Jul 7, 2004

Replies: 20

Views: 4K

Undergrad Why Does the Universe Appear Redder Than Expected?

Jun 25, 2004 · Replies 36 · Jul 7, 2004

2

Replies: 36

Views: 6K

Undergrad How Does the Earth's Magnetic Field Affect Communication Systems?

Jul 2, 2004 · Replies 3 · Jul 7, 2004

Replies: 3

Views: 3K

High School Pull of Gravity.Where it starts?

Jul 7, 2004 · Replies 3 · Jul 7, 2004

Replies: 3

Views: 3K

Undergrad How they steered cassini through saturns rings

Jul 6, 2004 · Replies 3 · Jul 7, 2004

Replies: 3

Views: 2K

High School How come the moon is circling the earth?

Jul 3, 2004 · Replies 11 · Jul 6, 2004

Replies: 11

Views: 3K

Mysterious 10th Planet Discovered Beyond Pluto

Jul 5, 2004 · Replies 6 · Jul 6, 2004

Replies: 6

Views: 3K

Undergrad Methane Cloud Found at Titan's South Pole

Jul 4, 2004 · Replies 9 · Jul 6, 2004

Replies: 9

Views: 4K

High School Did the Cassini-Huygens Mission Discover New Moons Around Saturn?

Jun 23, 2004 · Replies 4 · Jul 6, 2004

Replies: 4

Views: 4K

High School Why can't we see Venus at night but at dawn and dusk?

Jul 6, 2004 · Replies 1 · Jul 6, 2004

Replies: 1

Views: 4K

Beagles 3 & 4 due for 2007 Launch

Jun 27, 2004 · Replies 2 · Jul 6, 2004

Replies: 2

Views: 3K

Graduate Bell correlation between horizons

Jul 5, 2004 · Replies 1 · Jul 6, 2004

Replies: 1

Views: 2K

Undergrad WMAP has conclusively proven an expanding universe.

Jul 3, 2004 · Replies 7 · Jul 5, 2004

Replies: 7

Views: 3K

Graduate Unraveling the Mysteries of the Accelerating Universe

Jun 30, 2004 · Replies 9 · Jul 5, 2004

Replies: 9

Views: 4K

Undergrad Can Infinite Density in Black Holes Imply Infinite Mass?

Jun 1, 2004 · Replies 28 · Jul 5, 2004

Replies: 28

Views: 24K

Undergrad Geostationary Orbit: Why Equatorial Plane?

Jul 3, 2004 · Replies 2 · Jul 4, 2004

Replies: 2

Views: 3K

Did We Go to the Moon? | People's Thoughts

Jul 2, 2004 · Replies 1 · Jul 2, 2004

Replies: 1

Views: 3K

Interactive Orbital Mechanics Simulation with Joystick Control

Jul 2, 2004 · Replies 3 · Jul 2, 2004

Replies: 3

Views: 3K

Mike Melvill and Burt Rutan on the Tonight Show

Jun 24, 2004 · Replies 4 · Jul 1, 2004

Replies: 4

Views: 3K

Undergrad How Can I Break Into the Space Industry?

Jun 30, 2004 · Replies 1 · Jul 1, 2004

Replies: 1

Views: 5K

Graduate Massive Black Hole Stumps Researchers

Jun 29, 2004 · Replies 10 · Jun 30, 2004

Replies: 10

Views: 3K

Undergrad Could the age of the universe be older than we thought?

Jun 28, 2004 · Replies 28 · Jun 29, 2004

Replies: 28

Views: 5K

Graduate 9 Space Dimensions 2 Time Dimensions

Apr 28, 2004 · Replies 7 · Jun 29, 2004

Replies: 7

Views: 18K

How to Find HST Images: A Step-by-Step Tutorial

Jun 23, 2004 · Replies 5 · Jun 28, 2004

Replies: 5

Views: 3K

Graduate We're 156 Billion Light-years Wide?

Jun 4, 2004 · Replies 22 · Jun 28, 2004

Replies: 22

Views: 9K

Graduate Topological Defects in Cosmology: Research Progress

Jun 24, 2004 · Replies 1 · Jun 28, 2004

Replies: 1

Views: 3K

Graduate Why does Expanding Space have a 2 to 1 Ratio with Contracting Space?

Jun 24, 2004 · Replies 11 · Jun 28, 2004

Replies: 11

Views: 6K

High School Effect of removing helmet in space?

May 12, 2004 · Replies 18 · Jun 28, 2004

Replies: 18

Views: 12K

High School Supermassive Black Hole Sings "BOOM" in B Flat

Sep 10, 2003 · Replies 21 · Jun 27, 2004

Replies: 21

Views: 6K

Graduate Are we entering an era of 'Penalty Shoot Out' for inflation?

Jun 25, 2004 · Replies 1 · Jun 26, 2004

Replies: 1

Views: 3K

Undergrad A question about the sun and blackbody

May 2, 2004 · Replies 4 · Jun 25, 2004

Replies: 4

Views: 6K

High School Are There Stunning Images of Suns Similar to Ours in Space?

Jun 25, 2004 · Replies 2 · Jun 25, 2004

Replies: 2

Views: 5K

High School Cosmos vs Universe: What's the Difference?

Jun 12, 2004 · Replies 5 · Jun 25, 2004

Replies: 5

Views: 18K

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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