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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 Is the Singularity Infinitely Dense and Small?

JCCol
Jan 17, 2006 · Replies 2 · Jan 18, 2006

Replies: 2

Undergrad NASA Observation: Cartwheel's Massive Rings

hypatia
Jan 17, 2006 · Replies 3 · Jan 18, 2006

Replies: 3

Graduate Life on a brown dwarf or a fissioning rouge planet?

Loren Booda
Jan 18, 2006 · Replies 2 · Jan 18, 2006

Replies: 2

Graduate Nemesis and Planet X: Can they be Ruled Out?

Nereid
Jan 1, 2006 · Replies 14 · Jan 18, 2006

Replies: 14

Graduate What Do Orbital Motions of Outer Planets Reveal About the Pioneer Anomaly?

varsha
Jan 14, 2006 · Replies 16 · Jan 18, 2006

Replies: 16

High School Exploring Our Solar System: Gas and Debris

jhe1984
Jan 16, 2006 · Replies 8 · Jan 17, 2006

Replies: 8

High School 'nothing' happened before the big bang?

varsha
Jan 15, 2006 · Replies 3 · Jan 17, 2006

Replies: 3

High School Determining Best Time of Year to Observe a Star - Astronomy for Beginners

Brewer
Jan 15, 2006 · Replies 1 · Jan 17, 2006

Replies: 1

Graduate Are Multi Universes and Infinite Space Possible with Big Bang Theory?

David_777
Jan 10, 2006 · Replies 3 · Jan 17, 2006

Replies: 3

Graduate What is the Latest Update on CMB (end 2005)?

marcus
Jan 16, 2006 · Replies 1 · Jan 16, 2006

Replies: 1

Graduate A New Explanation for Venus' Retrograde Rotation

WarrenPlatts
Jan 12, 2006 · Replies 10 · Jan 16, 2006

Replies: 10

Graduate Areas of space that we cannot see that also have an effect on expansion?

Rake
Jan 7, 2006 · Replies 14 · Jan 16, 2006

Replies: 14

High School Can Sound Be Heard on Other Planets?

bags
Jan 14, 2006 · Replies 1 · Jan 15, 2006

Replies: 1

Graduate Can We Observe the Growth of Black Holes and Their Mysterious Processes?

ukmicky
Dec 27, 2005 · Replies 5 · Jan 14, 2006

Replies: 5

Graduate Analyzing Dark Matter Halos: Isothermal vs NFW Profiles

S.P.P
Jan 9, 2006 · Replies 7 · Jan 14, 2006

Replies: 7

Graduate Not sure this is the right thread for this?

Schrodinger's Dog
Jan 10, 2006 · Replies 3 · Jan 14, 2006

Replies: 3

High School Age & Distance of Stars: Clarifying Light Speed Impact

Blahness
Jan 10, 2006 · Replies 10 · Jan 13, 2006

Replies: 10

Graduate What Is the Shape of the Universe?

Wizardsblade
Jan 12, 2006 · Replies 6 · Jan 13, 2006

Replies: 6

High School Trapezium in orion was a very strange quadruple star

jnorman
Jan 11, 2006 · Replies 2 · Jan 12, 2006

Replies: 2

Three cheers and two years for the Mars rovers

Ivan Seeking
Jan 10, 2006 · Replies 7 · Jan 12, 2006

Replies: 7

Undergrad Why don't stars explode? What holds them together?

alancj
Oct 28, 2005 · Replies 32 · Jan 12, 2006

2

Replies: 32

Undergrad Planetary Orbits Around Black Holes

varsha
Jan 12, 2006 · Replies 2 · Jan 12, 2006

Replies: 2

Undergrad How do they know the universe is expanding

ukmicky
Jan 10, 2006 · Replies 9 · Jan 12, 2006

Replies: 9

Graduate Can We Really Leave Our Universe and Explore Other Dimensions?

Silverbackman
Jan 6, 2006 · Replies 7 · Jan 12, 2006

Replies: 7

Heim-Dröscher space,eight-dimensional universe, Mars-Earth: three hour trip

Dr. Nick
Jan 11, 2006 · Replies 1 · Jan 11, 2006

Replies: 1

Earth Seen from Mars - NASA JPL Image

scott1
Dec 31, 2005 · Replies 4 · Jan 11, 2006

Replies: 4

Undergrad Placing an Asteroid in Moon Orbit: Is It Possible?

Plastic Photon
Dec 27, 2005 · Replies 16 · Jan 11, 2006

Replies: 16

Undergrad Finding the distance to an Asteroid

dimensionless
Jan 11, 2006 · Replies 2 · Jan 11, 2006

Replies: 2

Graduate The Cosmological Parameters 2005

marcus
Jan 9, 2006 · Replies 3 · Jan 11, 2006

Replies: 3

Destroy a Planet: How to Annihilate a Planet

NavyMan
Jan 9, 2006 · Replies 21 · Jan 11, 2006

Replies: 21

Graduate Frank Tipler on Matter-Energy Conversion

WarrenPlatts
Jan 3, 2006 · Replies 21 · Jan 7, 2006

Replies: 21

Earth Space Agency: Your Opinion Matters

sandijs
Jan 5, 2006 · Replies 2 · Jan 5, 2006

Replies: 2

Graduate Could Black Holes Survive the Hot Death of the Universe?

zanazzi78
Dec 23, 2005 · Replies 4 · Jan 5, 2006

Replies: 4

Graduate Same star in many places in the sky

-Job-
Jan 1, 2006 · Replies 11 · Jan 4, 2006

Replies: 11

Graduate Addressing Impossibilities in the Standard Cosmological Model

turbo
Dec 30, 2005 · Replies 33 · Jan 2, 2006

2

Replies: 33

High School Spacetime Diagram of Binary Star System - Get Visuals & Info

blumfeld0
Dec 27, 2005 · Replies 5 · Jan 2, 2006

Replies: 5

High School Holographic universe and werewolves/shapeshifters.possible?

jimmy1200
Nov 8, 2005 · Replies 2 · Jan 1, 2006

Replies: 2

Graduate New Clifford Will paper (LISA, BHs)

marcus
Jan 1, 2006 · Replies 1 · Jan 1, 2006

Replies: 1

Not your standard '2005 in review' thread

Nereid
Jan 1, 2006 · Replies 3 · Jan 1, 2006

Replies: 3

Graduate Alternate sources for 3K background radiation?

Graviman
Dec 29, 2005 · Replies 7 · Jan 1, 2006

Replies: 7

Undergrad How do the moon's & earth's orbital planes intersect?

-Job-
Dec 31, 2005 · Replies 1 · Dec 31, 2005

Replies: 1

Undergrad Understanding Negative Pressure: Physical Description Explained

helenwang413
Dec 27, 2005 · Replies 12 · Dec 30, 2005

Replies: 12

Undergrad What Causes the Vibrant Cloud Colors on Jupiter?

mrjeffy321
Dec 28, 2005 · Replies 1 · Dec 29, 2005

Replies: 1

Undergrad How Big Would a Black Hole Be if All the Stars in the Universe Combined?

van gogh
Dec 27, 2005 · Replies 6 · Dec 28, 2005

Replies: 6

Undergrad How Do We Know the Sun's Orbit Through the Galaxy?

Mk
Dec 27, 2005 · Replies 2 · Dec 28, 2005

Replies: 2

Graduate Is It Possible to Destroy Stars Technologically?

Aurora Firestorm
Nov 13, 2005 · Replies 27 · Dec 27, 2005

Replies: 27

High School I am probably going to be critizied for this, but

modeman
Sep 16, 2005 · Replies 34 · Dec 27, 2005

2

Replies: 34

Graduate What Happens When a Star Exceeds the Chandrasekhar Limit and Forms a Black Hole?

ThomasFuhlery
Dec 25, 2005 · Replies 3 · Dec 27, 2005

Replies: 3

Graduate Number of parallel universes formed at each measurement

Mr. Tambourine Man
Dec 24, 2005 · Replies 8 · Dec 26, 2005

Replies: 8

Graduate The Stable Universe: Human/Alien Intelligence & Time Travel Possibilities

Causal
Dec 25, 2005 · Replies 1 · Dec 25, 2005

Replies: 1

Undergrad Will the temperature in the universe ever reach absolute zero?

shanu_bhaiya
Dec 21, 2005 · Replies 3 · Dec 24, 2005

Replies: 3

Graduate Is All Matter Affected by the Expansion of the Universe?

Paul Martin
Dec 19, 2005 · Replies 19 · Dec 23, 2005

Replies: 19

Undergrad Could Black Holes Be the Opposite of Suns in the Big Bang Theory?

runicle
Dec 13, 2005 · Replies 4 · Dec 23, 2005

Replies: 4

Graduate Could the Big Bang Be a Pinched-Off Bubble from a Greater Dimension?

Lord Draco
Dec 17, 2005 · Replies 6 · Dec 22, 2005

Replies: 6

Graduate Is Blackhole Symmetry Proportional to Information Exchange?

Olias
May 5, 2004 · Replies 38 · Dec 21, 2005

2

Replies: 38

Graduate What do we know about the mysterious dark energy and dark matter?

jhe1984
Dec 20, 2005 · Replies 1 · Dec 20, 2005

Replies: 1

About to become an armchair astronomer

jhe1984
Dec 19, 2005 · Replies 1 · Dec 20, 2005

Replies: 1

Graduate CMB: Understanding Uniformity & Isotropy

vincentm
Dec 19, 2005 · Replies 1 · Dec 20, 2005

Replies: 1

Undergrad How do know if something is red-shifted without prior knowledge?

Saoist
Dec 18, 2005 · Replies 4 · Dec 19, 2005

Replies: 4

Undergrad How Do We Know The Age Of The Universe For Sure?

Silverbackman
Dec 16, 2005 · Replies 6 · Dec 19, 2005

Replies: 6

Graduate Cosmological Constant: Unravelling the Mysteries of Dark Matter

pivoxa15
Dec 16, 2005 · Replies 6 · Dec 19, 2005

Replies: 6

Graduate What is Universeguy's Paradox in the Study of the Pary Galaxy?

japam
Dec 6, 2005 · Replies 26 · Dec 19, 2005

Replies: 26

Graduate Correct Understanding of Big Bang Theory

Lord Draco
Dec 17, 2005 · Replies 3 · Dec 17, 2005

Replies: 3

Graduate A theory of gravity based on special relativity

Garth
Dec 16, 2005 · Replies 7 · Dec 17, 2005

Replies: 7

Graduate Space-Time Fabric: Is There Anything Beyond?

M Telepathic
Dec 16, 2005 · Replies 1 · Dec 16, 2005

Replies: 1

Graduate How is the Precession of Mercury's Perihelion Calculated and Explained?

RandallB
Nov 28, 2005 · Replies 15 · Dec 16, 2005

Replies: 15

Undergrad Understanding the Earth-Moon Center of Mass and Its Effects on Lunar Orbit

dimensionless
Dec 16, 2005 · Replies 7 · Dec 16, 2005

Replies: 7

Graduate Big Bang and the Law of Conservation of Matter/Energy?

M Telepathic
Dec 15, 2005 · Replies 3 · Dec 16, 2005

Replies: 3

Graduate Explaining the Cuspy Halo Problem

jhe1984
Dec 15, 2005 · Replies 2 · Dec 16, 2005

Replies: 2

Graduate Will cosmology ever confirm the Big Bang theory?

vincentm
Dec 15, 2005 · Replies 2 · Dec 16, 2005

Replies: 2

High School Lifecycles of Stars: What Causes Gravity in the Beginning?

mrhessy
Dec 15, 2005 · Replies 1 · Dec 15, 2005

Replies: 1

Have You Ever Watched the Movie Spaceballs?

Blahness
Dec 13, 2005 · Replies 14 · Dec 14, 2005

Replies: 14

Graduate Uncovering the Truth: Examining the Existence of Gravitational Waves

Spin_Network
Dec 4, 2005 · Replies 37 · Dec 14, 2005

2

Replies: 37

Graduate Discussion/essay for uni on the Inflation proscess

JohnnyTheFox
Dec 12, 2005 · Replies 24 · Dec 14, 2005

Replies: 24

Undergrad Does a Flat Universe Have an Edge?

pivoxa15
Dec 12, 2005 · Replies 3 · Dec 14, 2005

Replies: 3

Undergrad Big Bang & Big Crunch: Questions & Answers

waderoo
Dec 11, 2005 · Replies 17 · Dec 13, 2005

Replies: 17

Graduate Could the Big Bang Allow for an Infinite Universe?

pivoxa15
Dec 12, 2005 · Replies 1 · Dec 12, 2005

Replies: 1

Graduate Understanding the Universe: Cosmological Limitations and the Multiverse

Macro
Nov 30, 2005 · Replies 9 · Dec 11, 2005

Replies: 9

High School Some spiral galaxies larger than previously reported

Astronuc
Dec 9, 2005 · Replies 9 · Dec 10, 2005

Replies: 9

High School Why Do Galaxies Form Spiral Shapes?

eosphorus
Dec 10, 2005 · Replies 1 · Dec 10, 2005

Replies: 1

What Defines the Space Opera Genre?

Cladson
Dec 8, 2005 · Replies 6 · Dec 10, 2005

Replies: 6

Graduate Can a galaxy have a recession velocity greater than the speed of light?

nnxion
Dec 9, 2005 · Replies 4 · Dec 9, 2005

Replies: 4

Graduate Solving for Mars Encounter Orbit w/Limited Info

skiboka33
Dec 2, 2005 · Replies 5 · Dec 9, 2005

Replies: 5

Undergrad What is the true origin of gamma ray bursts?

RAD4921
Nov 23, 2005 · Replies 14 · Dec 9, 2005

Replies: 14

Graduate Chicago: New Views of the Universe (Dec 8-13,2005)

robphy
Dec 8, 2005 · Replies 5 · Dec 8, 2005

Replies: 5

Graduate How does gravity affect the formation of structures after the big bang?

Pengwuino
Dec 3, 2005 · Replies 8 · Dec 8, 2005

Replies: 8

Neutronium article @ Wikipedia in need of experts and knowledgeables

Mk
Dec 5, 2005 · Replies 5 · Dec 8, 2005

Replies: 5

Graduate VLF Radio Astronomy: Research & Sources

waht
Dec 4, 2005 · Replies 2 · Dec 8, 2005

Replies: 2

Undergrad 4 Astronomy Problems: ASSISTANCE NEEDED PLEASE

astronomystudent
Dec 4, 2005 · Replies 33 · Dec 7, 2005

2

Replies: 33

Graduate Distinguishing MOND from dark matter

marcus
Nov 27, 2005 · Replies 15 · Dec 6, 2005

Replies: 15

Graduate What role do orbits play in Earth's climate change?

Bobby R
Dec 2, 2005 · Replies 5 · Dec 6, 2005

Replies: 5

Undergrad Kuiper Belt Info: Sidereal Period & Kepler's Equations

ehreming
Dec 4, 2005 · Replies 4 · Dec 6, 2005

Replies: 4

High School Solar System: Size, Planets & Comets

nomorevishnu
Dec 3, 2005 · Replies 2 · Dec 6, 2005

Replies: 2

Stargazing Interested in Astrophotography? Check Out My Site!

russ_watters
Dec 4, 2005 · Replies 23 · Dec 5, 2005

Replies: 23

Undergrad Missing Galaxies? Visible Universe Mystery

japam
Dec 2, 2005 · Replies 11 · Dec 4, 2005

Replies: 11

Undergrad Is a Miniature Solar System Being Born?

Astronuc
Nov 30, 2005 · Replies 3 · Dec 3, 2005

Replies: 3

High School What is a Black Hole Actually Made Of?

Mr. dude
Nov 28, 2005 · Replies 6 · Dec 3, 2005

Replies: 6

Graduate Need WMAP error bars for CMBFAST power spectrum output

Nim
Jun 25, 2003 · Replies 2 · Dec 2, 2005

Replies: 2

Undergrad The Universe as big as a basket ball?

edgar23
Nov 28, 2005 · Replies 6 · Nov 30, 2005

Replies: 6

Graduate What is Causing the Expansion of a Singular Particle in an Absorbed Universe?

hexhunter
Nov 23, 2005 · Replies 5 · Nov 30, 2005

Replies: 5

sidebar

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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