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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 New Take on SETI: Astro-ph/0506110

Jun 6, 2005 · Replies 2 · Jun 7, 2005

Replies: 2

Views: 3K

Stargazing Building a telescope mount and have some questions

Jun 5, 2005 · Replies 4 · Jun 6, 2005

Replies: 4

Views: 9K

Graduate What is the significance of high redshift black holes for the early universe?

Jun 3, 2005 · Replies 6 · Jun 5, 2005

Replies: 6

Views: 3K

Graduate Can Humanity Overcome the FTL Barrier?

May 26, 2005 · Replies 7 · Jun 5, 2005

Replies: 7

Views: 3K

Graduate So Has Virtual Particles Been Proven To Exist?

Jun 5, 2005 · Replies 4 · Jun 5, 2005

Replies: 4

Views: 3K

What makes Eridanus1 such a stunning binary in the night sky?

Jun 4, 2005 · Replies 1 · Jun 4, 2005

Replies: 1

Views: 2K

Graduate Recent Astronomy & Cosmology Research Topics

Jun 2, 2005 · Replies 6 · Jun 4, 2005

Replies: 6

Views: 4K

Graduate Increasing G during the formation of helium.

Jun 3, 2005 · Replies 6 · Jun 3, 2005

Replies: 6

Views: 3K

Graduate Non-Cosmological Interpretation of Redshift

May 28, 2005 · Replies 56 · Jun 3, 2005

2

Replies: 56

Views: 8K

Undergrad Is Dark Matter the Missing Piece in Our Cosmic Puzzle?

May 26, 2005 · Replies 50 · Jun 2, 2005

2

Replies: 50

Views: 7K

High School Can TV Static Detect Cosmic Microwave Background Radiation?

May 28, 2005 · Replies 10 · Jun 2, 2005

Replies: 10

Views: 5K

Graduate My first post here and a question

May 19, 2005 · Replies 10 · Jun 2, 2005

Replies: 10

Views: 3K

Graduate Could a New Theory Redefine Our Understanding of Cosmic Evolution?

Jun 2, 2005 · Replies 2 · Jun 2, 2005

Replies: 2

Views: 3K

Undergrad Are Other Dimension Universes Plausible?

Jun 1, 2005 · Replies 9 · Jun 1, 2005

Replies: 9

Views: 3K

Graduate Density of the inter-cluster medium

May 30, 2005 · Replies 9 · Jun 1, 2005

Replies: 9

Views: 13K

Undergrad Expansion of the Universe, cop this

May 30, 2005 · Replies 13 · Jun 1, 2005

Replies: 13

Views: 4K

High School How Can a Chinese Student Explore the Universe and Improve English Skills?

May 26, 2005 · Replies 13 · Jun 1, 2005

Replies: 13

Views: 2K

Graduate Metallicity of the WHIM and ICM, and its history

May 30, 2005 · Replies 2 · Jun 1, 2005

Replies: 2

Views: 2K

Graduate The thread thread: Strangeness of the expanding space paradigm

May 21, 2005 · Replies 118 · May 31, 2005

4

Replies: 118

Views: 22K

Can You Name All the Moons in Outer Space?

May 25, 2005 · Replies 6 · May 31, 2005

Replies: 6

Views: 3K

US Air Force Developing Space Weapons: A Global Arms Race?

May 24, 2005 · Replies 11 · May 31, 2005

Replies: 11

Views: 2K

Graduate Was Cosmic Recombination Caused by Charge Attraction or Positron Infusion?

May 31, 2005 · Replies 1 · May 31, 2005

Replies: 1

Views: 4K

Graduate Does the Existence of Dark Matter Contradict the Laws of Physics?

May 31, 2005 · Replies 1 · May 31, 2005

Replies: 1

Views: 3K

Graduate Mysterious Quasars: What We Know & Don't Know

May 31, 2005 · Replies 1 · May 31, 2005

Replies: 1

Views: 3K

Graduate What Do Quasar Absorption Lines Reveal About the Universe?

May 27, 2005 · Replies 18 · May 30, 2005

Replies: 18

Views: 6K

Undergrad How Fast Are We Really Moving in the Universe?

May 30, 2005 · Replies 3 · May 30, 2005

Replies: 3

Views: 3K

Poll

Lottery: Ticket for SpaceShipOne, would you buy?

May 29, 2005 · Replies 17 · May 30, 2005

Replies: 17

Views: 4K

Undergrad Creation of heavy elements: r and s process

May 25, 2005 · Replies 3 · May 29, 2005

Replies: 3

Views: 6K

The Pork Chop Solution: Pondering My Place in Space

May 28, 2005 · Replies 4 · May 28, 2005

Replies: 4

Views: 3K

High School Voyager Exits Solar System: Shockwave-ish Lines Explained

May 26, 2005 · Replies 2 · May 28, 2005

Replies: 2

Views: 4K

Graduate Hyper Metal-Poor Stars: The First Generation in the Universe?

May 27, 2005 · Replies 4 · May 27, 2005

Replies: 4

Views: 3K

Couldn't we use artificial soil to colonize it?

May 24, 2005 · Replies 16 · May 27, 2005

Replies: 16

Views: 5K

Graduate Quasars are closer, less massive, not as bright.

Dec 23, 2004 · Replies 14 · May 27, 2005

Replies: 14

Views: 4K

High School Diamonds on other planets? Or just Earth?

May 26, 2005 · Replies 10 · May 27, 2005

Replies: 10

Views: 3K

Undergrad Need Source Code In c For 2-Bodies Gravitational Problem

May 4, 2005 · Replies 6 · May 26, 2005

Replies: 6

Views: 4K

Graduate Solving N-Bodies Problem with Leap Frog & Runga-Kutta Methods

May 3, 2005 · Replies 19 · May 26, 2005

Replies: 19

Views: 4K

Undergrad Cleaning a reflector mirror without scratching it

May 25, 2005 · Replies 5 · May 25, 2005

Replies: 5

Views: 5K

Poll

Origin of the Universe: Created Universe vs Cyclical Universe

May 23, 2005 · Replies 9 · May 25, 2005

Replies: 9

Views: 10K

Graduate Could Multiple Forms of Life Exist on Earth Beyond Our Understanding?

May 25, 2005 · Replies 2 · May 25, 2005

Replies: 2

Views: 2K

Protecting Astronomers from Space Adverts

May 24, 2005 · Replies 3 · May 24, 2005

Replies: 3

Views: 2K

Graduate Where is Dark Matter Found in the Universe?

May 24, 2005 · Replies 6 · May 24, 2005

Replies: 6

Views: 4K

High School Is There a Center to the Universe?

May 4, 2005 · Replies 22 · May 24, 2005

Replies: 22

Views: 6K

Graduate How Can We Study Life in Other Galaxies?

May 21, 2005 · Replies 19 · May 24, 2005

Replies: 19

Views: 15K

High School Kleopatra main asteroid belt between Mars and Jupiter

May 18, 2005 · Replies 7 · May 24, 2005

Replies: 7

Views: 3K

High School What Is Pluto? Can We Live There?

May 20, 2005 · Replies 10 · May 23, 2005

Replies: 10

Views: 4K

Graduate What Warps Space? | Finding Answers About Intersteller Travel

Feb 25, 2005 · Replies 20 · May 23, 2005

Replies: 20

Views: 6K

Graduate What is the Possibility of White Holes?

May 18, 2005 · Replies 5 · May 23, 2005

Replies: 5

Views: 2K

Undergrad What is the future of USAA in commercial space travel?

May 22, 2005 · Replies 1 · May 23, 2005

Replies: 1

Views: 6K

High School Does the Moon's Gravity Attract Earth?

Apr 30, 2005 · Replies 43 · May 22, 2005

2

Replies: 43

Views: 11K

Graduate What is the Explanation for the Cosmic Microwave Background Radiation?

May 13, 2005 · Replies 13 · May 22, 2005

Replies: 13

Views: 4K

Graduate Lensed Quasar Pair: Retaining Point-like Appearance

May 13, 2005 · Replies 32 · May 22, 2005

2

Replies: 32

Views: 6K

Graduate Integration of Superstring Theory into the Big Bang

May 21, 2005 · Replies 1 · May 21, 2005

Replies: 1

Views: 2K

Graduate HI clouds in the center of the Virgo cluster

May 21, 2005 · Replies 0 · May 21, 2005

Replies: 0

Views: 2K

Graduate Conceptualizing the analogy of gravity

May 18, 2005 · Replies 5 · May 21, 2005

Replies: 5

Views: 5K

Undergrad Main Sequence Stars: Mass & Beyond

May 13, 2005 · Replies 7 · May 21, 2005

Replies: 7

Views: 7K

Graduate What fuels accelerating expansion of our universe

Mar 27, 2005 · Replies 48 · May 21, 2005

2

Replies: 48

Views: 8K

Undergrad What are Non-Spherical Structures in Astronomy?

May 12, 2005 · Replies 8 · May 20, 2005

Replies: 8

Views: 3K

Graduate What Happens When the Particle Horizon Exceeds the Event Horizon?

May 5, 2005 · Replies 1 · May 19, 2005

Replies: 1

Views: 7K

Graduate About Eternal Inflation and Spacetime Bubbles

May 17, 2005 · Replies 3 · May 19, 2005

Replies: 3

Views: 4K

Undergrad What is the distance between peaks in this Cassini image?

May 17, 2005 · Replies 7 · May 18, 2005

Replies: 7

Views: 4K

Graduate The Sun's Rotation: A Deeper Look

May 14, 2005 · Replies 6 · May 18, 2005

Replies: 6

Views: 2K

Graduate Is the Lunar-Precession Theory Flawed?

May 16, 2005 · Replies 4 · May 18, 2005

Replies: 4

Views: 5K

Graduate Three Body Problem: Dark Matter's Impact

Aug 3, 2004 · Replies 33 · May 17, 2005

2

Replies: 33

Views: 13K

High School Spiral Galaxies: 3 Distinguishing Characteristics

May 16, 2005 · Replies 5 · May 16, 2005

Replies: 5

Views: 3K

Graduate Black Holes - Where does all the matter go

May 15, 2005 · Replies 21 · May 16, 2005

Replies: 21

Views: 16K

Undergrad Did abhas mitra proved that black holes dont exist

May 16, 2005 · Replies 7 · May 16, 2005

Replies: 7

Views: 6K

Graduate Is This the First Birth of a Black Hole Ever Detected?

May 10, 2005 · Replies 17 · May 15, 2005

Replies: 17

Views: 4K

Uncovering the Mystery: The Disappearance of Sean Carroll

May 14, 2005 · Replies 6 · May 15, 2005

Replies: 6

Views: 4K

Graduate Did Iapetus Collide with a Primordial Saturnian Ring?

May 2, 2005 · Replies 8 · May 14, 2005

Replies: 8

Views: 3K

Graduate Is Frame Dragging an Example of a Gravity Wave?

May 10, 2005 · Replies 8 · May 14, 2005

Replies: 8

Views: 3K

Graduate Calculate separation of galaxies as a function of time

May 9, 2005 · Replies 12 · May 14, 2005

Replies: 12

Views: 4K

Graduate What If Missing Particles and Stuff Cannot Be Found?

Apr 20, 2005 · Replies 97 · May 14, 2005

4

Replies: 97

Views: 13K

Evil Space Monkeys: Can't Sleep or ELSE!

May 13, 2005 · Replies 11 · May 14, 2005

Replies: 11

Views: 3K

Undergrad Form and Features of Asteroids and Neutron Stars

May 7, 2005 · Replies 10 · May 14, 2005

Replies: 10

Views: 4K

High School More precise numbers on 2004MN4 asteroid flyby in 2029

May 13, 2005 · Replies 2 · May 13, 2005

Replies: 2

Views: 3K

Undergrad Calculating solar mass using luminosity

May 12, 2005 · Replies 6 · May 13, 2005

Replies: 6

Views: 22K

Stargazing Photo of my RA drive. Its an ETX-105.

May 10, 2005 · Replies 3 · May 12, 2005

Replies: 3

Views: 1K

Gamma ray emission which is confusing some scientists

May 12, 2005 · Replies 1 · May 12, 2005

Replies: 1

Views: 2K

Graduate Gravitational Waves of Early Universe

May 11, 2005 · Replies 3 · May 12, 2005

Replies: 3

Views: 2K

Graduate What factors contribute to the migration of hot Jupiters?

May 11, 2005 · Replies 2 · May 12, 2005

Replies: 2

Views: 3K

Stargazing New 3x Barlow lens and a 2x shorty barlow lens

Mar 5, 2005 · Replies 12 · May 10, 2005

Replies: 12

Views: 3K

Graduate Is There a Black Hole in Our Solar System?

Apr 30, 2005 · Replies 14 · May 10, 2005

Replies: 14

Views: 3K

Graduate Three-Body Problem: Is it Solvable in Same Plane?

May 9, 2005 · Replies 7 · May 10, 2005

Replies: 7

Views: 3K

Undergrad Light Speed vs Vision: Is Optic Velocity Greater Than 300000km/s?

May 9, 2005 · Replies 3 · May 9, 2005

Replies: 3

Views: 2K

Graduate Is renormalization in quantum field theory a valid approach?

May 5, 2005 · Replies 17 · May 9, 2005

Replies: 17

Views: 4K

Graduate Unmovable object and an unstoppable object

May 6, 2005 · Replies 8 · May 8, 2005

Replies: 8

Views: 3K

Graduate Questions and Doubts about the Big-bang

May 5, 2005 · Replies 7 · May 8, 2005

Replies: 7

Views: 4K

Graduate Anterior Propulsion: Lunar & Solar Forces, UCI Halt

May 8, 2005 · Replies 1 · May 8, 2005

Replies: 1

Views: 3K

Graduate 1-dimensional problem in Newtonian gravity- HELP

Apr 11, 2005 · Replies 4 · May 7, 2005

Replies: 4

Views: 3K

Undergrad Black Hole Size: Calculating the Actual Size

Apr 26, 2005 · Replies 18 · May 7, 2005

Replies: 18

Views: 4K

Graduate Baricentre (barycenter) - does it 'wobble'?

May 6, 2005 · Replies 5 · May 7, 2005

Replies: 5

Views: 6K

Stargazing What would you see if you sent a telescope

May 6, 2005 · Replies 4 · May 7, 2005

Replies: 4

Views: 3K

Graduate Gravitational field, two body problem, lagrangian points

May 6, 2005 · Replies 5 · May 7, 2005

Replies: 5

Views: 9K

Graduate Is There a Center to Our Universe and What Shapes Spacetime?

May 6, 2005 · Replies 1 · May 6, 2005

Replies: 1

Views: 2K

Graduate Massive objects in the immediate solar neighbourhood

Apr 15, 2005 · Replies 23 · May 6, 2005

Replies: 23

Views: 4K

Graduate Could a local black hole exists undetected?

May 6, 2005 · Replies 2 · May 6, 2005

Replies: 2

Views: 3K

Undergrad Did Einstein believe in black holes?

May 6, 2005 · Replies 1 · May 6, 2005

Replies: 1

Views: 2K

High School Big Bang Project Ideas: Get Creative!

May 2, 2005 · Replies 8 · May 6, 2005

Replies: 8

Views: 15K

Graduate A nice reality check on cosmology.

May 5, 2005 · Replies 1 · May 5, 2005

Replies: 1

Views: 2K

Graduate Calculating Solar Neutrino Emission Using p-p Chain Energies

May 4, 2005 · Replies 1 · May 4, 2005

Replies: 1

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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