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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 Baricentre (barycenter) - does it 'wobble'?

Nereid
May 6, 2005 · Replies 5 · May 7, 2005

Replies: 5

Stargazing What would you see if you sent a telescope

bOrtiz
May 6, 2005 · Replies 4 · May 7, 2005

Replies: 4

Graduate Gravitational field, two body problem, lagrangian points

yeus
May 6, 2005 · Replies 5 · May 7, 2005

Replies: 5

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

bayan
May 6, 2005 · Replies 1 · May 6, 2005

Replies: 1

Graduate Massive objects in the immediate solar neighbourhood

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

Replies: 23

Graduate Could a local black hole exists undetected?

Billy T
May 6, 2005 · Replies 2 · May 6, 2005

Replies: 2

Undergrad Did Einstein believe in black holes?

whozum
May 6, 2005 · Replies 1 · May 6, 2005

Replies: 1

High School Projects to demonstrate Big Bang expansion

jawmes
May 2, 2005 · Replies 8 · May 6, 2005

Replies: 8

Graduate A nice reality check on cosmology.

turbo
May 5, 2005 · Replies 1 · May 5, 2005

Replies: 1

Graduate Calculating Solar Neutrino Emission Using p-p Chain Energies

janzizka
May 4, 2005 · Replies 1 · May 4, 2005

Replies: 1

Graduate MOND predictions and TeVeS theory critiques

ohwilleke
Apr 28, 2005 · Replies 16 · May 4, 2005

Replies: 16

Graduate Difference between BH's and BH's?

Peter.E
May 2, 2005 · Replies 9 · May 4, 2005

Replies: 9

Undergrad What Is the Luminosity Distance Relationship?

bigman8424
May 4, 2005 · Replies 5 · May 4, 2005

Replies: 5

Graduate Cosmological constant and Dark energy

wolram
Apr 29, 2005 · Replies 11 · May 4, 2005

Replies: 11

Undergrad Is Imagination a Gateway to the Universe?

oldunion
May 3, 2005 · Replies 4 · May 4, 2005

Replies: 4

Undergrad What percentage of observed galaxies show redshift versus blueshift?

LocktnLoaded
Apr 24, 2005 · Replies 5 · May 4, 2005

Replies: 5

Space Travel n size of traveller

darkar
Apr 20, 2005 · Replies 7 · May 4, 2005

Replies: 7

Undergrad Probabilities of earth like orbits, and solar systems like ours?

wolram
May 3, 2005 · Replies 5 · May 4, 2005

Replies: 5

High School Could Jupiter Be a Failed Star?

hexhunter
Apr 29, 2005 · Replies 36 · May 4, 2005

2

Replies: 36

High School Scientific objectives for a Neptune satellite mission

relativelyslow
Apr 23, 2005 · Replies 7 · May 3, 2005

Replies: 7

High School What exists between galaxies, and other questions about the night sky?

Mozart
May 2, 2005 · Replies 7 · May 3, 2005

Replies: 7

High School Why doesn't the moon spin on its axis?

godzilla7
Apr 26, 2005 · Replies 10 · May 3, 2005

Replies: 10

Graduate Can We Create Miniature Black Holes at Particle Accelerators?

cosmoboy
May 2, 2005 · Replies 1 · May 3, 2005

Replies: 1

Graduate New MOND paper: Pointecouteau and Silk

marcus
May 2, 2005 · Replies 2 · May 3, 2005

Replies: 2

Graduate Is the Big Bang Theory the Only Valid Explanation for the Universe's Origin?

sd01g
Apr 9, 2005 · Replies 41 · May 2, 2005

2

Replies: 41

Graduate What is your view on what the cosmological constant is?

wolram
May 1, 2005 · Replies 3 · May 2, 2005

Replies: 3

Big Bang Article - Early Universe more Fluid like

yogi
Apr 22, 2005 · Replies 1 · May 2, 2005

Replies: 1

Graduate Process noise of satellite orbit determination

whigg_wang
May 2, 2005 · Replies 1 · May 2, 2005

Replies: 1

Undergrad Light Bending Around Black Holes: A Real Phenomenon

UrbanXrisis
May 1, 2005 · Replies 1 · May 2, 2005

Replies: 1

Graduate Books on nuclear physics and cosmology with worked solutions

janzizka
May 1, 2005 · Replies 1 · May 1, 2005

Replies: 1

High School Current Theory of Expansion of Space: What Do Scientists Think?

Mark Walker
Apr 30, 2005 · Replies 1 · May 1, 2005

Replies: 1

Graduate What is the Cosmological Natural Selection theory?

marcus
Apr 19, 2005 · Replies 72 · May 1, 2005

3

Replies: 72

Graduate Trying to make sense of the time in spacetime

WarrickF
Apr 30, 2005 · Replies 1 · Apr 30, 2005

Replies: 1

Astronomers photograph extra-solar planet

infidel
Apr 1, 2005 · Replies 4 · Apr 30, 2005

Replies: 4

High School Saturn is diminished and can be put into a PURE water container

lwymarie
Apr 28, 2005 · Replies 9 · Apr 29, 2005

Replies: 9

Trip through space animation set to music

Olbers_Paradox
Apr 29, 2005 · Replies 2 · Apr 29, 2005

Replies: 2

High School What is the matter-energy ratio in a critical universe?

sp3685
Apr 28, 2005 · Replies 3 · Apr 28, 2005

Replies: 3

Container for anthropic principle report

SplinterIon
Apr 26, 2005 · Replies 2 · Apr 27, 2005

Replies: 2

Graduate Why do standing waves fit inside black holes with a node at the event horizon?

ColdFusion85
Apr 23, 2005 · Replies 5 · Apr 27, 2005

Replies: 5

High School My Body Expanding? A Frightening Thought

icvotria
Apr 25, 2005 · Replies 19 · Apr 27, 2005

Replies: 19

Stunning New Hubble Photo of Whirlpool Galaxy M51

Orion1
Apr 26, 2005 · Replies 2 · Apr 27, 2005

Replies: 2

Graduate Universe AgeSize with respect to DM?

Spin_Network
Apr 25, 2005 · Replies 3 · Apr 26, 2005

Replies: 3

Graduate Does Zero Curvature in Space Really Mean a Looping Universe?

DaveC426913
Apr 26, 2005 · Replies 4 · Apr 26, 2005

Replies: 4

Undergrad How Would You Navigate After Using a Warp Drive?

aychamo
Apr 19, 2005 · Replies 42 · Apr 26, 2005

2

Replies: 42

High School Where to aim a laser at the rising sun to hit it head-on?

gunblaze
Apr 20, 2005 · Replies 4 · Apr 25, 2005

Replies: 4

Graduate Is Gravity More Than Just a Force in a Unified Theory?

LizardKing23
Apr 16, 2005 · Replies 28 · Apr 25, 2005

Replies: 28

Undergrad What Is the Equation for Estimating Extraterrestrial Life?

Someone502
Apr 23, 2005 · Replies 2 · Apr 24, 2005

Replies: 2

Physics mysteries to challenge an overconfident physics major

pattiecake
Apr 22, 2005 · Replies 15 · Apr 23, 2005

Replies: 15

High School Can a Gong in Space Vibrate Without Sound?

hsutrack
Apr 23, 2005 · Replies 2 · Apr 23, 2005

Replies: 2

High School Are There Solar Systems with More Than Three Stars?

revelator
Jan 21, 2005 · Replies 13 · Apr 23, 2005

Replies: 13

Graduate Could the uneven expansion of the universe challenge the concept of equilibrium?

Karoly
Apr 19, 2005 · Replies 6 · Apr 22, 2005

Replies: 6

Graduate Would a Nearby Supernova Disrupt the Solar Wind and Cause Earthquakes?

Mike2
Apr 10, 2005 · Replies 9 · Apr 22, 2005

Replies: 9

High School Top 10 Hands-On Astronomy Activities?

cj
Apr 21, 2005 · Replies 7 · Apr 22, 2005

Replies: 7

High School What Are Black Holes and How Do They Curved Space?

AcEY
Apr 19, 2005 · Replies 16 · Apr 22, 2005

Replies: 16

Possible threat: passenger airplane denied access to US airspace

Monique
Apr 17, 2005 · Replies 27 · Apr 21, 2005

Replies: 27

Graduate Finding reliable sources on white dwarf structure and evolution

charlie85
Apr 21, 2005 · Replies 2 · Apr 21, 2005

Replies: 2

Graduate Big Bang = Big Flow (RHIC Results)

Phobos
Apr 20, 2005 · Replies 5 · Apr 21, 2005

Replies: 5

Name two things that signifify a trip around the sun

pattiecake
Apr 14, 2005 · Replies 9 · Apr 20, 2005

Replies: 9

Graduate Could Light Energy Loss Explain the Expansion of Space?

whatdofisheat
Apr 15, 2005 · Replies 18 · Apr 20, 2005

Replies: 18

High School At the beginning of the universe

lwymarie
Apr 20, 2005 · Replies 2 · Apr 20, 2005

Replies: 2

Graduate Look For Extraterrestrial Civilizations (Don't Just Listen)

Ivan Seeking
Apr 18, 2005 · Replies 6 · Apr 20, 2005

Replies: 6

Graduate What Mathematical Tool Measures the Curvature of Space?

misskitty
Apr 10, 2005 · Replies 21 · Apr 19, 2005

Replies: 21

High School Is Teegarden's star really that close?

evthis
Mar 3, 2005 · Replies 12 · Apr 19, 2005

Replies: 12

Graduate How to find the size of the universe?

whozum
Apr 15, 2005 · Replies 19 · Apr 19, 2005

Replies: 19

High School Why is the temperature of space 2.7K if it's a vacuum?

Pengwuino
Apr 14, 2005 · Replies 28 · Apr 19, 2005

Replies: 28

Graduate Does cosmic expansion acceleration mean the universe is younger than Earth?

KOLYA K
Apr 19, 2005 · Replies 2 · Apr 19, 2005

Replies: 2

Graduate Could Our Universe Be Inside a Giant Black Hole?

A_I_
Apr 19, 2005 · Replies 6 · Apr 19, 2005

Replies: 6

Graduate Question regarding accellerating expansion of the universe.

hedons
Mar 26, 2005 · Replies 36 · Apr 19, 2005

2

Replies: 36

Graduate Why do all observed black holes have event horizons if naked singularities are possible?

wolram
Mar 18, 2005 · Replies 15 · Apr 19, 2005

Replies: 15

Graduate What Exactly is a Degenerate Gas?

Baggio
Apr 16, 2005 · Replies 6 · Apr 19, 2005

Replies: 6

Graduate Gravitational equations for the N-body problem in 3D

LizardKing23
Apr 16, 2005 · Replies 9 · Apr 19, 2005

Replies: 9

Graduate Ionization equilibrium and heating sources in FGH and McKee-Ostriker models

hellfire
Dec 24, 2004 · Replies 34 · Apr 19, 2005

2

Replies: 34

Graduate Dark matter, energy and negetive gravity

misskitty
Apr 16, 2005 · Replies 12 · Apr 18, 2005

Replies: 12

Graduate Gravitation, inertia, and the vacuum

turbo
Apr 15, 2005 · Replies 7 · Apr 18, 2005

Replies: 7

Graduate Can TeVeS eliminate the need for dark matter and dark energy?

ohwilleke
Apr 13, 2005 · Replies 3 · Apr 17, 2005

Replies: 3

Undergrad What does the star size limit mean for stellar cores?

Starship
Apr 17, 2005 · Replies 6 · Apr 17, 2005

Replies: 6

Undergrad How can the expansion of space cause light to loose energy?

whatdofisheat
Apr 12, 2005 · Replies 42 · Apr 17, 2005

2

Replies: 42

Graduate Does the physical universe exist before conception and after death?

Loren Booda
Apr 14, 2005 · Replies 1 · Apr 17, 2005

Replies: 1

Undergrad Effects of spontaneous gravity reduction

happytadpole
Apr 15, 2005 · Replies 3 · Apr 17, 2005

Replies: 3

Graduate Unifying the universe: Michio Kaku

Ivan Seeking
Apr 15, 2005 · Replies 1 · Apr 15, 2005

Replies: 1

High School Why does the moon appear orange sometimes?

Pengwuino
Mar 31, 2005 · Replies 19 · Apr 15, 2005

Replies: 19

Undergrad Not wanting to belive the acceleration universe model

whatdofisheat
Apr 12, 2005 · Replies 30 · Apr 15, 2005

2

Replies: 30

Graduate Bad Science and the Anthropic Cosmological Principle

moving finger
Apr 8, 2005 · Replies 29 · Apr 15, 2005

Replies: 29

Undergrad Is it possible for a Rocky Giant with rings around it?

Silverbackman
Apr 8, 2005 · Replies 5 · Apr 14, 2005

Replies: 5

Undergrad Science’s doomsday team vs. the asteroids

Ivan Seeking
Apr 10, 2005 · Replies 43 · Apr 14, 2005

2

Replies: 43

High School Predicting Solar and Lunar Eclipses

The Bob
Apr 9, 2005 · Replies 17 · Apr 14, 2005

Replies: 17

High School What caused Jupiter's Great Red Spot?

stoned
Apr 9, 2005 · Replies 8 · Apr 14, 2005

Replies: 8

Graduate Could Quantum Fluctuations Happen Even

Gold Barz
Apr 12, 2005 · Replies 5 · Apr 13, 2005

Replies: 5

Graduate Accessible cosmology papers on current status and open issues

Chronos
Mar 30, 2005 · Replies 23 · Apr 13, 2005

Replies: 23

Undergrad How big would an asteroid need to be to wipe out all life on Earth?

Gale
Mar 19, 2005 · Replies 30 · Apr 11, 2005

2

Replies: 30

High School Introductory resources on the cosmic microwave background

The Rev
Apr 11, 2005 · Replies 3 · Apr 11, 2005

Replies: 3

Undergrad How Many Supernovas Have Occurred Since the Big Bang?

Spin_Network
Apr 10, 2005 · Replies 24 · Apr 11, 2005

Replies: 24

Undergrad Is the moon's Hill Sphere the same as its Roche Radius?

naranekkosh
Apr 9, 2005 · Replies 3 · Apr 11, 2005

Replies: 3

Graduate Estimating Mass of Universe Within Horizon

wolram
Apr 7, 2005 · Replies 25 · Apr 11, 2005

Replies: 25

Graduate Do black holes have multiple singularities?

Ivan Seeking
Apr 2, 2005 · Replies 16 · Apr 11, 2005

Replies: 16

Graduate Redening of light from a certian density of particals

whatdofisheat
Apr 11, 2005 · Replies 1 · Apr 11, 2005

Replies: 1

Undergrad Escape Velocity Given Radius of 2 Objects

bigman8424
Apr 10, 2005 · Replies 4 · Apr 11, 2005

Replies: 4

High School Discovering Hoag's Object: A Fascinating Cosmic Smoke Ring in Space

tdunc
Apr 8, 2005 · Replies 1 · Apr 10, 2005

Replies: 1

Graduate The Possibility of a Black Hole Big Bang

mapper
Apr 7, 2005 · Replies 5 · Apr 10, 2005

Replies: 5

Undergrad 3 Questions - Why are some orbits

Gold Barz
Apr 8, 2005 · Replies 3 · Apr 9, 2005

Replies: 3

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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