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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.

Prefix: Undergrad

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Undergrad Terraforming Mars? Pros, Cons and Implications

Mar 27, 2004 · Replies 10 · Mar 28, 2004

Replies: 10

Views: 4K

Undergrad The Mystery of Star Formation: Why Do Gas Clouds Collapse?

Mar 26, 2004 · Replies 4 · Mar 27, 2004

Replies: 4

Views: 2K

Undergrad How can the distance to nearby stars be calculated using the parallax method?

Mar 22, 2004 · Replies 2 · Mar 23, 2004

Replies: 2

Views: 3K

Undergrad How long does a mission to Mars take, including crew stay?

Mar 20, 2004 · Replies 4 · Mar 22, 2004

Replies: 4

Views: 6K

Undergrad Celestial Reflections: How Far Can Radars Reach in Space?

Dec 7, 2003 · Replies 9 · Mar 21, 2004

Replies: 9

Views: 4K

Undergrad Bomb Explosion in Space: What Would Happen?

Mar 13, 2004 · Replies 28 · Mar 20, 2004

Replies: 28

Views: 9K

Undergrad Dark matter affecting galaxy rotation

Mar 18, 2004 · Replies 4 · Mar 19, 2004

Replies: 4

Views: 4K

Undergrad Australian Scientists Confirm Past Life On Mars

Mar 17, 2004 · Replies 3 · Mar 19, 2004

Replies: 3

Views: 4K

Undergrad When is a Planet not a Planet ?

Mar 17, 2004 · Replies 2 · Mar 19, 2004

Replies: 2

Views: 7K

Undergrad What Causes Galactic Plains?

Mar 18, 2004 · Replies 5 · Mar 18, 2004

Replies: 5

Views: 5K

Undergrad Spirit Rover Nightshot 'object'?

Mar 16, 2004 · Replies 7 · Mar 17, 2004

Replies: 7

Views: 3K

Undergrad An ignorant question about cosmology

Mar 12, 2004 · Replies 8 · Mar 16, 2004

Replies: 8

Views: 3K

Undergrad How far back in time can we observe with our current technology and telescopes?

Feb 16, 2004 · Replies 28 · Mar 16, 2004

Replies: 28

Views: 7K

Undergrad Understanding Birkeland Currents in Space

Jul 18, 2003 · Replies 6 · Mar 10, 2004

Replies: 6

Views: 7K

Undergrad Measuring Astronomical Distances

Feb 28, 2004 · Replies 3 · Mar 4, 2004

Replies: 3

Views: 3K

Undergrad Observe all the ages of the universe

Mar 2, 2004 · Replies 3 · Mar 2, 2004

Replies: 3

Views: 2K

Undergrad Does gravity play a role in the expansion of the universe?

Feb 19, 2004 · Replies 9 · Mar 1, 2004

Replies: 9

Views: 3K

Undergrad Questions about Universal Gravitation

Feb 10, 2004 · Replies 5 · Feb 24, 2004

Replies: 5

Views: 2K

Undergrad Falling Back to Orbit: Can Rockets Change Their Orbit?

Feb 20, 2004 · Replies 1 · Feb 20, 2004

Replies: 1

Views: 2K

Undergrad Gravity acting as a repulsive forces at long distances

Jan 24, 2004 · Replies 4 · Feb 20, 2004

Replies: 4

Views: 5K

Undergrad Could Life Exist in the Hidden Oceans of Jupiter's Moons?

Feb 15, 2004 · Replies 2 · Feb 16, 2004

Replies: 2

Views: 2K

Undergrad Growth of Plants in Zero Gravity

Feb 11, 2004 · Replies 3 · Feb 13, 2004

Replies: 3

Views: 10K

Undergrad Astronomers unravel a mystery of the Dark Ages

Feb 5, 2004 · Replies 5 · Feb 10, 2004

Replies: 5

Views: 3K

Undergrad Are There Resources to Help Understand Black Holes for an Amateur Astronomer?

Feb 5, 2004 · Replies 2 · Feb 10, 2004

Replies: 2

Views: 3K

Undergrad Can Beagle 2 Lander uncover evidence of life on Mars?

Nov 27, 2003 · Replies 22 · Feb 9, 2004

Replies: 22

Views: 7K

Undergrad Can we really see 3D in the universe.

Feb 4, 2004 · Replies 13 · Feb 7, 2004

Replies: 13

Views: 3K

Undergrad Opportunity Microscopic Camera Image

Feb 5, 2004 · Replies 3 · Feb 7, 2004

Replies: 3

Views: 3K

Undergrad How can I determine the date and time using a Planisphere watch?

Feb 3, 2004 · Replies 5 · Feb 4, 2004

Replies: 5

Views: 6K

Undergrad Gravity Questions: Measuring and Speed

Feb 3, 2004 · Replies 3 · Feb 3, 2004

Replies: 3

Views: 3K

Undergrad Interstellar Travel: Reaching Alpha Centauri

Feb 1, 2004 · Replies 5 · Feb 3, 2004

Replies: 5

Views: 4K

Undergrad Double Star characteristic frequencies of light

Feb 2, 2004 · Replies 2 · Feb 3, 2004

Replies: 2

Views: 3K

Undergrad Age of Universe: Dist. to Big Bang vs New Star

Nov 17, 2003 · Replies 5 · Feb 2, 2004

Replies: 5

Views: 4K

Undergrad Definition of Life: Beyond Organic Matter

Jan 30, 2004 · Replies 1 · Jan 30, 2004

Replies: 1

Views: 3K

Undergrad How big is a BLACK HOLE? Can it be calculated ?

Jan 25, 2004 · Replies 5 · Jan 26, 2004

Replies: 5

Views: 7K

Undergrad What is the Purpose of the Cosmic Ray Observatory?

Jan 13, 2004 · Replies 4 · Jan 23, 2004

Replies: 4

Views: 3K

Undergrad Expanding people in an expanding universe?

Jan 17, 2004 · Replies 7 · Jan 22, 2004

Replies: 7

Views: 8K

Undergrad Mass of a Planet: Find it Quickly!

Jan 21, 2004 · Replies 22 · Jan 21, 2004

Replies: 22

Views: 10K

Undergrad What does the sun look like from Mars?

Jan 19, 2004 · Replies 9 · Jan 20, 2004

Replies: 9

Views: 7K

Undergrad LUNAR LASER RANGING Experiment Uncovers Moon's Geology

Jan 19, 2004 · Replies 1 · Jan 19, 2004

Replies: 1

Views: 2K

Undergrad Is it possible for an object to orbit a stationary object?

Jan 10, 2004 · Replies 11 · Jan 12, 2004

Replies: 11

Views: 4K

Undergrad Space Station: Cost vs Value - Science Channel Review

Dec 24, 2003 · Replies 12 · Jan 10, 2004

Replies: 12

Views: 3K

Undergrad What is an Active Galactic Nucleus and Why is it Important?

Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Views: 4K

Undergrad Is the Universe Really Expanding, and Where is it Heading?

Jan 8, 2004 · Replies 2 · Jan 8, 2004

Replies: 2

Views: 3K

Undergrad Motion of J002E3: Captured Object's Orbit Around Earth

Jan 1, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Views: 3K

Undergrad How Did Beagle 2 Navigate Its Final Approach to Mars?

Dec 24, 2003 · Replies 9 · Dec 31, 2003

Replies: 9

Views: 3K

Undergrad Mass of Black Hole at Size of Tennis ball: Facts & Variations

Dec 29, 2003 · Replies 1 · Dec 29, 2003

Replies: 1

Views: 3K

Undergrad Could the Star of Bethlehem Have Been a Supernova?

Dec 23, 2003 · Replies 2 · Dec 28, 2003

Replies: 2

Views: 3K

Undergrad What Happens if We Remove a Planet from the Solar System?

Sep 23, 2003 · Replies 39 · Dec 19, 2003

2

Replies: 39

Views: 11K

Undergrad Is the Moon Really Moving Away from Earth and What Would Happen If It Did?

Dec 2, 2003 · Replies 15 · Dec 13, 2003

Replies: 15

Views: 8K

Undergrad Kepler's Third Law: Deriving Radius3/Period2

Nov 15, 2003 · Replies 13 · Dec 10, 2003

Replies: 13

Views: 16K

Undergrad Modeling Planetary Temperature for an Online Game Using Limited Factors

Dec 2, 2003 · Replies 7 · Dec 8, 2003

Replies: 7

Views: 3K

Undergrad The Collapsar Model: What Do We Know?

Dec 7, 2003 · Replies 2 · Dec 8, 2003

Replies: 2

Views: 4K

Undergrad Determining stable orbits for other stars

Dec 7, 2003 · Replies 4 · Dec 7, 2003

Replies: 4

Views: 4K

Undergrad How do solar wind particles get trapped in a planet's magnetosphere?

Dec 4, 2003 · Replies 4 · Dec 5, 2003

Replies: 4

Views: 5K

Undergrad Kuiper Belt Binary Pairs: Existence Confirmed?

Dec 2, 2003 · Replies 9 · Dec 4, 2003

Replies: 9

Views: 3K

Undergrad Is astrophysics the right path for me in grad school?

Dec 1, 2003 · Replies 2 · Dec 2, 2003

Replies: 2

Views: 3K

Undergrad How can the satellite have an centrifugal force?

Nov 30, 2003 · Replies 10 · Dec 2, 2003

Replies: 10

Views: 4K

Undergrad Is the Universe's Shape Just a Matter of Perception?

Nov 19, 2003 · Replies 13 · Dec 1, 2003

Replies: 13

Views: 5K

Undergrad Does the univeres have size or shape?

Nov 29, 2003 · Replies 2 · Nov 30, 2003

Replies: 2

Views: 5K

Undergrad If a massive body fails to become a star could it still suport planetary system?

Nov 30, 2003 · Replies 1 · Nov 30, 2003

Replies: 1

Views: 3K

Undergrad Ecliptic Plane's relation to Galactic Plane

Nov 26, 2003 · Replies 6 · Nov 28, 2003

Replies: 6

Views: 21K

Undergrad How do Oort Cloud objects become short-period comets?

Nov 25, 2003 · Replies 3 · Nov 27, 2003

Replies: 3

Views: 5K

Undergrad Expaning universe and colliding galaxies

Nov 19, 2003 · Replies 4 · Nov 27, 2003

Replies: 4

Views: 4K

Undergrad Is the Ptolemaic System Still Relevant in Modern Astronomy?

Nov 23, 2003 · Replies 4 · Nov 25, 2003

Replies: 4

Views: 4K

Undergrad Black holes with nothing left to ingest.

Nov 20, 2003 · Replies 5 · Nov 24, 2003

Replies: 5

Views: 3K

Undergrad Collisions of large bodies starting at stationary positions

Nov 23, 2003 · Replies 3 · Nov 24, 2003

Replies: 3

Views: 3K

Undergrad Extrasolar planets discovered so far

Nov 20, 2003 · Replies 5 · Nov 24, 2003

Replies: 5

Views: 2K

Undergrad Can you measure a star's diameter directly?

Nov 9, 2003 · Replies 7 · Nov 21, 2003

Replies: 7

Views: 7K

Undergrad How Do Planetary Rings Form and Move?

Nov 4, 2003 · Replies 8 · Nov 19, 2003

Replies: 8

Views: 4K

Undergrad Sun light traveling to earth speed

Nov 19, 2003 · Replies 1 · Nov 19, 2003

Replies: 1

Views: 3K

Undergrad Does the Sun Move and What Forces Drive its Motion?

Nov 3, 2003 · Replies 8 · Nov 19, 2003

Replies: 8

Views: 4K

Undergrad Why Do Astronomers Relate Star Distance to Universe Age?

Nov 17, 2003 · Replies 2 · Nov 18, 2003

Replies: 2

Views: 4K

Undergrad Could Jupiter's Radiation Power Space Probes Instead of Damaging Them?

Nov 16, 2003 · Replies 6 · Nov 17, 2003

Replies: 6

Views: 6K

Undergrad Good read for basic background info

Nov 14, 2003 · Replies 2 · Nov 17, 2003

Replies: 2

Views: 3K

Undergrad Determining Age of Universe Using Hubbles Constant

Nov 13, 2003 · Replies 1 · Nov 13, 2003

Replies: 1

Views: 3K

Undergrad Dark matter discovery: Bail me out, guys?

Oct 27, 2003 · Replies 5 · Nov 12, 2003

Replies: 5

Views: 3K

Undergrad Distance of Star: Solve Parallax Equation for km & Light Years

Nov 12, 2003 · Replies 10 · Nov 12, 2003

Replies: 10

Views: 3K

Undergrad Sun more active than for a millennium: New Scientist

Nov 3, 2003 · Replies 11 · Nov 8, 2003

Replies: 11

Views: 5K

Undergrad The Roche Limit Formula: Discover the Solution to This Celestial Phenomenon

Nov 5, 2003 · Replies 2 · Nov 6, 2003

Replies: 2

Views: 4K

Undergrad Anthropic Principle: Definition & Science

Nov 5, 2003 · Replies 4 · Nov 5, 2003

Replies: 4

Views: 3K

Undergrad What Causes Blue and Red Shift in Light?

Nov 2, 2003 · Replies 1 · Nov 3, 2003

Replies: 1

Views: 15K

Undergrad Gravitational catapult and a spacecraft

Nov 3, 2003 · Replies 1 · Nov 3, 2003

Replies: 1

Views: 6K

Undergrad Does the Earth's Core Wobble Within the Planet Due to the Moon's Orbit?

Sep 22, 2003 · Replies 27 · Oct 31, 2003

Replies: 27

Views: 9K

Undergrad Black Hole Cannibalism: How Do Black Holes Devour Their Own 'Offspring'?

Oct 26, 2003 · Replies 11 · Oct 28, 2003

Replies: 11

Views: 4K

Undergrad What Are the Potential Consequences of Not Finding Gravity Waves?

Oct 20, 2003 · Replies 13 · Oct 27, 2003

Replies: 13

Views: 5K

Undergrad Question About Elliptical Orbits

Oct 23, 2003 · Replies 11 · Oct 24, 2003

Replies: 11

Views: 4K

Undergrad Gamma Rays Origin: NASA, UMich, DOE Labs Confirm Death of Massive Star

Oct 18, 2003 · Replies 3 · Oct 23, 2003

Replies: 3

Views: 5K

Undergrad The Fragile Earth: Our Existence Hangs on a Tiny Orbital Change

Oct 20, 2003 · Replies 25 · Oct 21, 2003

Replies: 25

Views: 4K

Undergrad Explaining the Mystery of Star Separation: A Scientific Inquiry

Oct 12, 2003 · Replies 25 · Oct 20, 2003

Replies: 25

Views: 8K

Undergrad Why do Uranus and Pluto have retrograde rotations?

Oct 17, 2003 · Replies 19 · Oct 19, 2003

Replies: 19

Views: 5K

Undergrad Counting Supernovae: Estimating the Frequency of Stellar Explosions

Oct 11, 2003 · Replies 14 · Oct 17, 2003

Replies: 14

Views: 4K

Undergrad How does a boomerang behave in empty space and gravity?

Oct 15, 2003 · Replies 6 · Oct 16, 2003

Replies: 6

Views: 4K

Undergrad Unanswered Question: White Dwarfs and Black Holes

Sep 21, 2003 · Replies 31 · Oct 15, 2003

2

Replies: 31

Views: 8K

Undergrad Does Titan Have Oily Oceans?

Oct 7, 2003 · Replies 3 · Oct 12, 2003

Replies: 3

Views: 3K

Undergrad Orbits: Elliptical vs. Parabolic

Oct 7, 2003 · Replies 12 · Oct 11, 2003

Replies: 12

Views: 11K

Undergrad How Do Contact Binary Stars Coexist Without Destruction?

Jun 9, 2003 · Replies 19 · Oct 11, 2003

Replies: 19

Views: 9K

Undergrad Can Black Holes Truly Attract Light?

Oct 1, 2003 · Replies 7 · Oct 2, 2003

Replies: 7

Views: 4K

Undergrad What Are Parallel Universes and Their Infinite Possibilities?

Sep 20, 2003 · Replies 16 · Sep 30, 2003

Replies: 16

Views: 5K

Undergrad What Does Wave Rating Mean in Telescope Mirrors?

Sep 17, 2003 · Replies 3 · Sep 29, 2003

Replies: 3

Views: 5K

Undergrad Luminosity, Flux, Time: What Do They Mean?

Sep 28, 2003 · Replies 1 · Sep 28, 2003

Replies: 1

Views: 5K

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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