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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 A great 16 page paper in quantum cosmology

May 11, 2003 · Replies 1 · May 11, 2003

Replies: 1

Views: 3K

Graduate Nything beyond the known universe boundaries?

May 8, 2003 · Replies 4 · May 10, 2003

Replies: 4

Views: 4K

Graduate Dimensionless cosmology-getting rid of units

Apr 13, 2003 · Replies 8 · May 10, 2003

Replies: 8

Views: 5K

Undergrad Big Bang & Universe: Why No Bubble w/ Void?

May 8, 2003 · Replies 11 · May 10, 2003

Replies: 11

Views: 4K

Graduate Understanding the Concept of False Vacuum: Explained and Debunked

May 9, 2003 · Replies 5 · May 10, 2003

Replies: 5

Views: 8K

Undergrad Age of Universe: Transit Time & Calculation

May 9, 2003 · Replies 7 · May 9, 2003

Replies: 7

Views: 4K

Graduate Has anyone considered an anti space ?

May 3, 2003 · Replies 6 · May 9, 2003

Replies: 6

Views: 6K

Graduate Are Refinements to Newton’s Calculations Necessary?

May 9, 2003 · Replies 3 · May 9, 2003

Replies: 3

Views: 3K

Graduate What is the weight of a copy at Earth's average distance from the sun?

May 4, 2003 · Replies 6 · May 9, 2003

Replies: 6

Views: 21K

Undergrad Is There a Reason for the Unique Shape of This Galaxy?

May 7, 2003 · Replies 7 · May 8, 2003

Replies: 7

Views: 3K

Graduate The Physics of Immortality: Fact or Fiction?

May 7, 2003 · Replies 3 · May 7, 2003

Replies: 3

Views: 3K

Graduate What does one calorie per cubic mile mean to you?

Apr 27, 2003 · Replies 4 · May 7, 2003

Replies: 4

Views: 5K

High School Is Interstellar Travel Feasible with Current Physics?

Mar 25, 2003 · Replies 16 · May 7, 2003

Replies: 16

Views: 8K

Respected Linde vs Far-Out Rees: Who to Follow?

May 6, 2003 · Replies 1 · May 6, 2003

Replies: 1

Views: 3K

Graduate What are your ideas about describing Planck units?

May 3, 2003 · Replies 13 · May 6, 2003

Replies: 13

Views: 4K

Graduate What Makes Black Holes the Ultimate Mystery of Absolute Zero?

May 4, 2003 · Replies 4 · May 6, 2003

Replies: 4

Views: 3K

Einstein was right about the speed of gravity

Apr 17, 2003 · Replies 31 · May 5, 2003

2

Replies: 31

Views: 6K

Could Black Holes Be the Key to Understanding the Universe's Origin?

Apr 12, 2003 · Replies 11 · May 5, 2003

Replies: 11

Views: 4K

Undergrad S.A.R.S Could this be the result of inbound Particles

Apr 25, 2003 · Replies 30 · May 4, 2003

2

Replies: 30

Views: 6K

Graduate Alternative forms of the Friedmann equations

Apr 22, 2003 · Replies 8 · May 3, 2003

Replies: 8

Views: 5K

Poll

What Happens When Two Black Holes Collide?

Apr 15, 2003 · Replies 19 · May 2, 2003

Replies: 19

Views: 5K

High School Anybody know the name of this mission?

May 2, 2003 · Replies 4 · May 2, 2003

Replies: 4

Views: 3K

Graduate Could Suicidal Black Holes Evolve Due to Their Charge and Hawking Radiation?

Apr 30, 2003 · Replies 6 · May 1, 2003

Replies: 6

Views: 3K

Undergrad Light Acceleration Near Black Holes: The Effects on Gravity

Apr 28, 2003 · Replies 7 · Apr 30, 2003

Replies: 7

Views: 3K

Graduate If you go fast enough will you turn into a black hole

Apr 23, 2003 · Replies 8 · Apr 28, 2003

Replies: 8

Views: 4K

Graduate Are there more than two types of charges in spacetime?

Apr 25, 2003 · Replies 20 · Apr 28, 2003

Replies: 20

Views: 7K

Graduate (Not folding space) Instant Travel Form A-B? But Not Time (theory)

Apr 27, 2003 · Replies 1 · Apr 27, 2003

Replies: 1

Views: 7K

Undergrad Galaxy Movement and the Big Bang Theory Explained

Apr 21, 2003 · Replies 12 · Apr 26, 2003

Replies: 12

Views: 5K

Explore the Local Space in 3D: Download Celestia for Free!

Apr 23, 2003 · Replies 2 · Apr 25, 2003

Replies: 2

Views: 4K

High School Measuring the Size of the Milky Way: From End to End

Apr 20, 2003 · Replies 14 · Apr 25, 2003

Replies: 14

Views: 7K

Graduate Quanitized Space & Black Hole Formation

Apr 25, 2003 · Replies 1 · Apr 25, 2003

Replies: 1

Views: 4K

Undergrad Understanding the Solar Calendar: The Debate over Leap Year Frequency

Apr 24, 2003 · Replies 1 · Apr 25, 2003

Replies: 1

Views: 4K

High School How far does the earth travel in one year?

Apr 24, 2003 · Replies 8 · Apr 24, 2003

Replies: 8

Views: 4K

Graduate Why do galaxy clusters form sheets?

Apr 22, 2003 · Replies 5 · Apr 24, 2003

Replies: 5

Views: 4K

Graduate Why 1 dimensional discrete space?

Apr 22, 2003 · Replies 4 · Apr 23, 2003

Replies: 4

Views: 3K

Graduate What is the importance of hadronic matter in physics?

Apr 22, 2003 · Replies 2 · Apr 22, 2003

Replies: 2

Views: 6K

Undergrad Einstein's Cross: Examining the Impact of Lensing Galaxies

Apr 21, 2003 · Replies 4 · Apr 22, 2003

Replies: 4

Views: 3K

Undergrad Question about Finding Mass of Visual Binaries with Given Information

Apr 20, 2003 · Replies 3 · Apr 21, 2003

Replies: 3

Views: 4K

Multi-Verse: A Speculative Argument

Apr 15, 2003 · Replies 8 · Apr 20, 2003

Replies: 8

Views: 4K

Graduate Electrons in intergalactic space.

Apr 18, 2003 · Replies 3 · Apr 19, 2003

Replies: 3

Views: 5K

Graduate Cosmology Q: Is Flat Universe w/ Dust & +ve Lambda Expanding Forever?

Apr 16, 2003 · Replies 5 · Apr 18, 2003

Replies: 5

Views: 4K

Graduate Philosophy of Nature. Time and Space

Apr 8, 2003 · Replies 29 · Apr 18, 2003

Replies: 29

Views: 6K

High School What Are the Key Physics Concepts Behind Colliding Stars?

Apr 17, 2003 · Replies 3 · Apr 18, 2003

Replies: 3

Views: 3K

Graduate IN the Future Blackholes or Wormholes

Apr 17, 2003 · Replies 5 · Apr 17, 2003

Replies: 5

Views: 4K

Graduate So, Is the gravity of a light emmitting star really decreasing as 1/r?

Mar 26, 2003 · Replies 20 · Apr 17, 2003

Replies: 20

Views: 8K

Graduate Speed of Gravity = c: Does Traveling at C Affect Gravity?

Apr 10, 2003 · Replies 4 · Apr 16, 2003

Replies: 4

Views: 3K

Graduate Do Black Holes and Wormholes Affect Time and Space Similarly?

Apr 12, 2003 · Replies 3 · Apr 16, 2003

Replies: 3

Views: 8K

Is seti@home worth giving another try?

Apr 7, 2003 · Replies 18 · Apr 16, 2003

Replies: 18

Views: 5K

Graduate Is there a prediction for the frequency of a gravity wave?

Apr 14, 2003 · Replies 7 · Apr 15, 2003

Replies: 7

Views: 4K

Graduate Challenge - A problem in astronomy

Apr 14, 2003 · Replies 4 · Apr 15, 2003

Replies: 4

Views: 3K

Have you watch the movie the core?

Apr 14, 2003 · Replies 4 · Apr 15, 2003

Replies: 4

Views: 3K

Moving mass good or indifferent?

Apr 12, 2003 · Replies 4 · Apr 14, 2003

Replies: 4

Views: 3K

Graduate Is Everything a Form of Positive and Negative Space in Matter?

Apr 7, 2003 · Replies 13 · Apr 14, 2003

Replies: 13

Views: 4K

High School Which Voyager spacecraft traveled further: 1 or 2?

Apr 12, 2003 · Replies 3 · Apr 14, 2003

Replies: 3

Views: 6K

Graduate Skinny galaxy harbors massive black hole at core

Apr 12, 2003 · Replies 2 · Apr 13, 2003

Replies: 2

Views: 5K

How does light pollution impact birds and other wildlife?

Apr 7, 2003 · Replies 16 · Apr 13, 2003

Replies: 16

Views: 6K

Graduate Black hole event horizon as surface of spacetime symmetry

Apr 12, 2003 · Replies 2 · Apr 12, 2003

Replies: 2

Views: 5K

High School Is There a Giant Black Hole at the Centre of the Universe?

Apr 4, 2003 · Replies 58 · Apr 12, 2003

2

Replies: 58

Views: 14K

Graduate Rivers & whirlpools of spacetime

Apr 10, 2003 · Replies 4 · Apr 12, 2003

Replies: 4

Views: 4K

Jupiter is up to 58 moons (more likely)

Apr 5, 2003 · Replies 14 · Apr 11, 2003

Replies: 14

Views: 5K

Graduate Is this why solar systems are flat?

Apr 10, 2003 · Replies 9 · Apr 11, 2003

Replies: 9

Views: 4K

High School 200,000 years for 1mg of antimatter?

Apr 9, 2003 · Replies 4 · Apr 10, 2003

Replies: 4

Views: 4K

High School Europa and the possibilty of habitibility

Apr 7, 2003 · Replies 11 · Apr 10, 2003

Replies: 11

Views: 6K

Graduate What is the role of dark energy in the universe's expansion?

Apr 2, 2003 · Replies 19 · Apr 9, 2003

Replies: 19

Views: 6K

Graduate Understanding the Doppler Shift of Light and the Mystery of the Ether

Apr 6, 2003 · Replies 8 · Apr 9, 2003

Replies: 8

Views: 4K

Graduate Is There Hope for Safe Passage Through Cauchy Horizon Singularities?

Apr 3, 2003 · Replies 2 · Apr 9, 2003

Replies: 2

Views: 5K

Midwesterners take a meteorite shower

Mar 28, 2003 · Replies 4 · Apr 8, 2003

Replies: 4

Views: 4K

Poll

High School When will we have a Mars Landing?

Apr 5, 2003 · Replies 10 · Apr 8, 2003

Replies: 10

Views: 5K

Graduate Magnetic Fields of Neutron Stars

Apr 4, 2003 · Replies 6 · Apr 8, 2003

Replies: 6

Views: 6K

Graduate Was the formation of our galaxy inevitable

Apr 4, 2003 · Replies 24 · Apr 7, 2003

Replies: 24

Views: 6K

Graduate What exactly will happen if the big rip occurs

Apr 7, 2003 · Replies 1 · Apr 7, 2003

Replies: 1

Views: 4K

Graduate New Hubble Measurements Challenge Physicists: Space May be Smooth

Apr 6, 2003 · Replies 3 · Apr 7, 2003

Replies: 3

Views: 5K

Graduate Is there scientific evidence for the existence of multiple universes?

Mar 30, 2003 · Replies 7 · Apr 5, 2003

Replies: 7

Views: 6K

High School Unraveling the Mystery of Pluto's Orbit and Planetary Motion

Mar 30, 2003 · Replies 8 · Apr 5, 2003

Replies: 8

Views: 6K

Graduate Keppler's 2nd & 3rd Law: A Discussion on Gravitational Force and Kinetic Energy

Apr 1, 2003 · Replies 8 · Apr 4, 2003

Replies: 8

Views: 4K

High School Is There a Connection Between Space, Time, and Velocity?

Apr 1, 2003 · Replies 3 · Apr 4, 2003

Replies: 3

Views: 3K

Graduate Uniform vs progressive solar system formation

Mar 26, 2003 · Replies 10 · Apr 4, 2003

Replies: 10

Views: 5K

High School Redshift Basics: What is the Redshift Phenomenon?

Apr 3, 2003 · Replies 7 · Apr 4, 2003

Replies: 7

Views: 5K

Mysterious Artifacts on Mars: What Do They Mean?

Apr 1, 2003 · Replies 10 · Apr 4, 2003

Replies: 10

Views: 6K

Graduate Can Multidimensional Space Time Exist?

Mar 31, 2003 · Replies 5 · Apr 2, 2003

Replies: 5

Views: 7K

Jen Congratulated by National News

Mar 28, 2003 · Replies 17 · Apr 2, 2003

Replies: 17

Views: 6K

Graduate The Equivalence of Space and Time: A Hypothesis Supported by Evidence

Mar 29, 2003 · Replies 5 · Apr 2, 2003

Replies: 5

Views: 3K

Why Haven't We Returned to the Moon?

Mar 22, 2003 · Replies 18 · Apr 1, 2003

Replies: 18

Views: 14K

Graduate Trouble for discrete space-time?

Mar 31, 2003 · Replies 4 · Apr 1, 2003

Replies: 4

Views: 5K

Undergrad Approximate orbital period for earth's moon

Mar 30, 2003 · Replies 2 · Mar 31, 2003

Replies: 2

Views: 4K

High School Why is the core of our earth so hot?

Mar 29, 2003 · Replies 6 · Mar 30, 2003

Replies: 6

Views: 5K

High School What Keeps the Earth Spinning? What If It Stops?

Mar 25, 2003 · Replies 5 · Mar 29, 2003

Replies: 5

Views: 8K

New Jupiter Phenomenon: Have You Heard?

Mar 17, 2003 · Replies 6 · Mar 27, 2003

Replies: 6

Views: 9K

High School Fact or Fiction: 2 Planets Discovered in Perpendicular Orbits?

Mar 26, 2003 · Replies 3 · Mar 26, 2003

Replies: 3

Views: 5K

High School Pluto: Lost Satellite of Neptune or Planet on its Own?

Mar 22, 2003 · Replies 15 · Mar 26, 2003

Replies: 15

Views: 10K

Graduate Understanding Time as a Dimension: A Detailed Explanation

Mar 24, 2003 · Replies 9 · Mar 26, 2003

Replies: 9

Views: 6K

Stargazing What are the latest features and top picks for telescopes?

Mar 7, 2003 · Replies 16 · Mar 25, 2003

Replies: 16

Views: 24K

Poll

Graduate Is a Theory of Everything Achievable in Physics?

Mar 20, 2003 · Replies 18 · Mar 25, 2003

Replies: 18

Views: 8K

Graduate Two Black Holes. No singularity.

Mar 24, 2003 · Replies 6 · Mar 25, 2003

Replies: 6

Views: 5K

High School How Do Stars Burn in Space Without Oxygen?

Mar 20, 2003 · Replies 22 · Mar 25, 2003

Replies: 22

Views: 11K

Graduate What Happens to Homogeneity in a Magnetic Universe of Pulsars?

Mar 20, 2003 · Replies 8 · Mar 23, 2003

Replies: 8

Views: 5K

Graduate What Caused the Heat in the Big Bang?

Mar 18, 2003 · Replies 9 · Mar 21, 2003

Replies: 9

Views: 8K

Graduate Density of dark energy in Planck units

Mar 19, 2003 · Replies 1 · Mar 19, 2003

Replies: 1

Views: 7K

Undergrad What is the significance of the LISA project in studying gravity waves?

Mar 9, 2003 · Replies 8 · Mar 18, 2003

Replies: 8

Views: 11K

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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