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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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Poll of exoplanet-finders about best methods

Nov 21, 2005 · Replies 9 · Nov 26, 2005

Replies: 9

Views: 2K

Graduate I tend to think of the universe in a simple matter

Nov 13, 2005 · Replies 8 · Nov 26, 2005

Replies: 8

Views: 4K

Graduate Why Did the Big Bang Create Irregular Bumps Instead of Expanding Uniformly?

Nov 23, 2005 · Replies 2 · Nov 24, 2005

Replies: 2

Views: 2K

Undergrad Why are our planets and galaxy in a plane shape?

Nov 23, 2005 · Replies 3 · Nov 24, 2005

Replies: 3

Views: 3K

Delay of JWST a Major Setback for Astronomy

Nov 21, 2005 · Replies 6 · Nov 23, 2005

Replies: 6

Views: 4K

Graduate Gravitational tractor for towing asteroids

Nov 22, 2005 · Replies 1 · Nov 22, 2005

Replies: 1

Views: 3K

Undergrad Why does a gas cloud spontanously rotate?

Oct 9, 2005 · Replies 12 · Nov 22, 2005

Replies: 12

Views: 8K

Graduate Could Quasars Be Ejection Events Instead of Collisions?

Nov 15, 2005 · Replies 4 · Nov 21, 2005

Replies: 4

Views: 2K

High School Speed of light? Or velocity of free space?

Nov 20, 2005 · Replies 4 · Nov 20, 2005

Replies: 4

Views: 7K

High School Center of Galaxys: Red Giant or Supernova?

Oct 27, 2005 · Replies 16 · Nov 20, 2005

Replies: 16

Views: 7K

Will the Venus Express Solve Mysteries or Uncover More?

Nov 9, 2005 · Replies 4 · Nov 19, 2005

Replies: 4

Views: 3K

PF is taken over by space robots?

Nov 15, 2005 · Replies 64 · Nov 19, 2005

3

Replies: 64

Views: 7K

Graduate If space is flat then what is directly under the planets?

Nov 19, 2005 · Replies 9 · Nov 19, 2005

Replies: 9

Views: 33K

Graduate Planets cause a warp in the fabric of space time

Nov 18, 2005 · Replies 3 · Nov 18, 2005

Replies: 3

Views: 2K

Graduate Flat Universe Theory: Questions & Answers

Nov 15, 2005 · Replies 5 · Nov 18, 2005

Replies: 5

Views: 3K

Graduate Does Gravity Play a Significant Role in Accretion?

Nov 16, 2005 · Replies 9 · Nov 17, 2005

Replies: 9

Views: 4K

Graduate Astronomy Problems: Please Look/help

Nov 13, 2005 · Replies 93 · Nov 17, 2005

4

Replies: 93

Views: 13K

Graduate What Are the Best Papers on Dark Matter and Dark Energy?

Nov 16, 2005 · Replies 2 · Nov 17, 2005

Replies: 2

Views: 2K

Graduate Patent 4 a close 2 C space vehicle drive

Nov 14, 2005 · Replies 3 · Nov 16, 2005

Replies: 3

Views: 3K

Graduate Calculating Speed of Stationary Object Falling Towards Earth

Nov 12, 2005 · Replies 23 · Nov 16, 2005

Replies: 23

Views: 14K

Graduate Settlement on Moon: Artificial Gravity & Feasibility

Nov 13, 2005 · Replies 6 · Nov 15, 2005

Replies: 6

Views: 5K

Graduate Acceleration of charges at Big Bang

Nov 13, 2005 · Replies 10 · Nov 15, 2005

Replies: 10

Views: 3K

Undergrad Does Gravitational Attraction Cause Energy Transfer Between Celestial Bodies?

Nov 14, 2005 · Replies 3 · Nov 14, 2005

Replies: 3

Views: 4K

Undergrad What Do We Know About the Composition of Mars' Moons, Phobos and Deimos?

Nov 13, 2005 · Replies 2 · Nov 14, 2005

Replies: 2

Views: 3K

Undergrad Gravitational Lensing: Why Does it Only Create Clones?

Nov 9, 2005 · Replies 13 · Nov 14, 2005

Replies: 13

Views: 4K

Graduate Models for Compactification from Inflation?

Jul 21, 2003 · Replies 2 · Nov 14, 2005

Replies: 2

Views: 4K

High School What Can You See With a Telescope During the Day?

Nov 14, 2005 · Replies 1 · Nov 14, 2005

Replies: 1

Views: 3K

Graduate Did Inflation Solve the Problem of the Universe's Original Gravity?

Nov 13, 2005 · Replies 7 · Nov 14, 2005

Replies: 7

Views: 4K

Undergrad Seeing light from early Universe

Nov 9, 2005 · Replies 22 · Nov 13, 2005

Replies: 22

Views: 4K

Graduate Shrinking Universe: Visible Universe & Universal Center of Mass

Mar 10, 2005 · Replies 17 · Nov 13, 2005

Replies: 17

Views: 14K

Graduate There must be a center to it all.

Mar 21, 2004 · Replies 29 · Nov 13, 2005

Replies: 29

Views: 8K

Graduate Accuracy in Space: Can 10000kg Bolts & Nuts be Precisely Screwed?

Nov 8, 2005 · Replies 12 · Nov 13, 2005

Replies: 12

Views: 3K

Should The Galaxy Have Been Colonized By Now?

Oct 26, 2005 · Replies 65 · Nov 12, 2005

3

Replies: 65

Views: 10K

Graduate Black Holes: The Possibility of Energy to Matter Conversion

Nov 12, 2005 · Replies 5 · Nov 12, 2005

Replies: 5

Views: 2K

Was the universe created? (not an evolution discussion)

Nov 9, 2005 · Replies 53 · Nov 12, 2005

2

Replies: 53

Views: 6K

Graduate What Are the Chances of Different Physical Laws If We Restarted the Big Bang?

Nov 3, 2005 · Replies 25 · Nov 12, 2005

Replies: 25

Views: 5K

Graduate Can We Pinpoint the Direction of the Big Bang's Origin?

Nov 11, 2005 · Replies 6 · Nov 12, 2005

Replies: 6

Views: 3K

Graduate Is Dark Matter the Unruh effect applied to the acceleration of Gravity?

Nov 10, 2005 · Replies 3 · Nov 11, 2005

Replies: 3

Views: 5K

Poll

Graduate What Are the Implications of Being the First Intelligent Life in the Galaxy?

Nov 2, 2005 · Replies 39 · Nov 11, 2005

2

Replies: 39

Views: 6K

Graduate Could the Speed of Light be Calculated Differently?

Nov 11, 2005 · Replies 1 · Nov 11, 2005

Replies: 1

Views: 3K

Graduate Anyone care to guess the size/diameter of the Universe?

Nov 10, 2005 · Replies 10 · Nov 11, 2005

Replies: 10

Views: 3K

Graduate Preservation of Space: Is There a Model?

Oct 18, 2005 · Replies 9 · Nov 10, 2005

Replies: 9

Views: 3K

High School Mysterious Spin of the Moon: How Does it Change?

Nov 9, 2005 · Replies 5 · Nov 10, 2005

Replies: 5

Views: 5K

Graduate Energy Requirements for Compressing Matter into a Black Hole

Nov 6, 2005 · Replies 3 · Nov 9, 2005

Replies: 3

Views: 3K

Stargazing What features should beginners look for when purchasing a telescope?

Nov 5, 2005 · Replies 7 · Nov 9, 2005

Replies: 7

Views: 3K

Graduate Glass Planets: Common and Detectable in Our Galactic Neighborhood?

Nov 8, 2005 · Replies 1 · Nov 8, 2005

Replies: 1

Views: 2K

Undergrad Why Does Venus Rotate Backwards?

Nov 4, 2005 · Replies 25 · Nov 8, 2005

Replies: 25

Views: 14K

High School What is the Truth about Black Holes and Light Holes?

Nov 4, 2005 · Replies 10 · Nov 8, 2005

Replies: 10

Views: 3K

Graduate Is There a Way to Distinguish Between Singularity and Matter in Black Holes?

Nov 3, 2005 · Replies 22 · Nov 8, 2005

Replies: 22

Views: 5K

Graduate Inside the Black Hole: Unravelling Its Mysteries

Nov 3, 2005 · Replies 17 · Nov 8, 2005

Replies: 17

Views: 4K

Undergrad Why are geosynchronous orbirs in equatorial plane circular?

Oct 25, 2005 · Replies 13 · Nov 8, 2005

Replies: 13

Views: 5K

Undergrad IS IT POSSIBLE TO CREATE A TRANSPARENT SHIELD FOR SPACE STATIONS?

Nov 8, 2005 · Replies 2 · Nov 8, 2005

Replies: 2

Views: 3K

Stargazing Telescope acting like microscope

Nov 8, 2005 · Replies 3 · Nov 8, 2005

Replies: 3

Views: 4K

Graduate Can White Holes Challenge the Second Law of Thermodynamics?

Nov 6, 2005 · Replies 4 · Nov 8, 2005

Replies: 4

Views: 2K

Undergrad [stars] Nuclear Fuel usage rate

Sep 8, 2005 · Replies 26 · Nov 7, 2005

Replies: 26

Views: 9K

Graduate What Happens to the Universe if Omega Equals Exactly 1?

Nov 3, 2005 · Replies 3 · Nov 7, 2005

Replies: 3

Views: 3K

Graduate A rulebased universe is much more compelling

Oct 25, 2005 · Replies 5 · Nov 7, 2005

Replies: 5

Views: 2K

Stargazing Animation I made last night of Mars

Nov 3, 2005 · Replies 2 · Nov 7, 2005

Replies: 2

Views: 1K

Graduate Neutron Stars: Strong Force, Density & Black Holes

Nov 7, 2005 · Replies 3 · Nov 7, 2005

Replies: 3

Views: 7K

Graduate Is the Universe Truly Closed and Bound by Entropy?

Sep 23, 2005 · Replies 10 · Nov 7, 2005

Replies: 10

Views: 6K

Graduate Who here has calculated the dark energy density?

Nov 6, 2005 · Replies 0 · Nov 6, 2005

Replies: 0

Views: 3K

Graduate Could a Supernova Have Killed Off Mammoths?

Nov 4, 2005 · Replies 4 · Nov 6, 2005

Replies: 4

Views: 4K

Graduate Could the Big Bang Be a White Hole?

Jun 28, 2003 · Replies 19 · Nov 5, 2005

Replies: 19

Views: 26K

Graduate What is the appropriateness of the term potential in general relativity?

Nov 4, 2005 · Replies 5 · Nov 5, 2005

Replies: 5

Views: 4K

Undergrad The maximum range of a missile_the earth is not flat

Nov 4, 2005 · Replies 1 · Nov 5, 2005

Replies: 1

Views: 3K

Undergrad Are There Tables Showing Distance vs. Red Shift of Stars?

Oct 27, 2005 · Replies 12 · Nov 5, 2005

Replies: 12

Views: 7K

Graduate The Multiverse: A New Perspective on Our Existence

Nov 4, 2005 · Replies 7 · Nov 5, 2005

Replies: 7

Views: 3K

High School What is the biggest star we know of?

Nov 4, 2005 · Replies 3 · Nov 5, 2005

Replies: 3

Views: 7K

Discovering Astrology: A Print-Friendly Guide to Understanding the Stars

Nov 1, 2005 · Replies 25 · Nov 4, 2005

Replies: 25

Views: 4K

Graduate Photon, Gravity, Mass and Black Holes.

Sep 18, 2005 · Replies 17 · Nov 4, 2005

Replies: 17

Views: 5K

Graduate Is Our Universe Just a Giant Black Hole?

Nov 4, 2005 · Replies 3 · Nov 4, 2005

Replies: 3

Views: 3K

Graduate Is the Universe Infinitely Old and What Would We Expect to See?

Oct 10, 2005 · Replies 49 · Nov 4, 2005

2

Replies: 49

Views: 10K

Graduate Are Traces of Earliest Stars Actually Detected?

Nov 3, 2005 · Replies 1 · Nov 3, 2005

Replies: 1

Views: 3K

Poll

Graduate Massive objects with super-solar metallicities at z~6

Oct 29, 2005 · Replies 14 · Nov 3, 2005

Replies: 14

Views: 3K

Poll

Graduate Is the Universe Finite or Infinite? A Poll on the Current Debate in Cosmology

May 13, 2003 · Replies 28 · Nov 3, 2005

Replies: 28

Views: 13K

Poll

Graduate Could Nucleonic Forces Hold the Key to Solving the Dark Matter Mystery?

Oct 7, 2005 · Replies 30 · Nov 3, 2005

2

Replies: 30

Views: 6K

Undergrad Specific definition of space in BB

Oct 29, 2005 · Replies 6 · Nov 3, 2005

Replies: 6

Views: 3K

Stargazing Are There Non-Photonic 'Telescopes' for Studying Astrophysical Objects?

Oct 30, 2005 · Replies 11 · Nov 2, 2005

Replies: 11

Views: 3K

Graduate An anomalous concentration of QSOs around NGC 3079

Oct 31, 2005 · Replies 11 · Nov 2, 2005

Replies: 11

Views: 3K

Graduate Values of an rms speed of hydrogen atoms in the observable universe?

Oct 28, 2005 · Replies 10 · Nov 1, 2005

Replies: 10

Views: 3K

High School Lower mass = more elliptical orbit?

Nov 1, 2005 · Replies 5 · Nov 1, 2005

Replies: 5

Views: 3K

Graduate Big Bang Failures: Examining Scientific Method & Tech Impact

Oct 29, 2005 · Replies 13 · Oct 31, 2005

Replies: 13

Views: 4K

High School What Is the Fuel That Stars Run Out of Before Becoming Black Holes?

Oct 30, 2005 · Replies 5 · Oct 31, 2005

Replies: 5

Views: 3K

High School Heard the moon is moving away from us

Oct 25, 2005 · Replies 6 · Oct 31, 2005

Replies: 6

Views: 2K

Graduate CMBR - multiple detections of the same 'spots'?

Oct 30, 2005 · Replies 2 · Oct 31, 2005

Replies: 2

Views: 2K

Graduate How reliable are the redshift measurements from GRB 050904?

Oct 14, 2005 · Replies 17 · Oct 31, 2005

Replies: 17

Views: 5K

Graduate How Would the Universe Evolve Without Gravitation?

Oct 27, 2005 · Replies 13 · Oct 30, 2005

Replies: 13

Views: 3K

Graduate The Distribution of Dark Matter in Spirals

Oct 6, 2005 · Replies 9 · Oct 30, 2005

Replies: 9

Views: 3K

High School What is the Maximum Possible Length of a Radio Wave?

Oct 6, 2005 · Replies 14 · Oct 30, 2005

Replies: 14

Views: 8K

Get Ready for a Rare Mars Flyby: Second Closest Approach in 60,000 Years!

Oct 27, 2005 · Replies 7 · Oct 30, 2005

Replies: 7

Views: 3K

Undergrad Where Does the First Second of the Universe Fall on the Time Line?

Oct 29, 2005 · Replies 2 · Oct 30, 2005

Replies: 2

Views: 4K

Graduate Could Gamma-ray Bursts Trigger Mass Extinctions?

Oct 20, 2005 · Replies 16 · Oct 29, 2005

Replies: 16

Views: 5K

Undergrad How Do Scientists Counteract Radiation Pressure on Artificial Satellites?

Oct 26, 2005 · Replies 7 · Oct 29, 2005

Replies: 7

Views: 3K

Undergrad Understanding Dark Matter: Theories and Effects on the Cosmos

Oct 12, 2005 · Replies 76 · Oct 29, 2005

3

Replies: 76

Views: 13K

Graduate Oscillating Universe: QG Theories on Gravity & Black Holes

Oct 28, 2005 · Replies 8 · Oct 29, 2005

Replies: 8

Views: 3K

Graduate Asteroseismic Analysis of Kepler Data

Dec 30, 2004 · Replies 16 · Oct 28, 2005

Replies: 16

Views: 9K

Undergrad How Did the Big Bang Create Atoms?

Sep 15, 2005 · Replies 38 · Oct 28, 2005

2

Replies: 38

Views: 12K

High School Sir Fred Hoyle: Discovering Elements in Supernovae

Oct 28, 2005 · Replies 3 · Oct 28, 2005

Replies: 3

Views: 11K

High School Forming Planets & Life in Liquid Water

Oct 28, 2005 · Replies 2 · Oct 28, 2005

Replies: 2

Views: 3K

Undergrad Are Stars Perfect Black Bodies or Just Approximations?

Oct 28, 2005 · Replies 4 · Oct 28, 2005

Replies: 4

Views: 2K

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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