Astronomy and Astrophysics Forum

Post thread
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.
Where Should I Begin in Astrology and Astronomy?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Can We Hear the Early Universe's 'Music'?
  • · Replies 0 ·
Replies
0
Views
2K
Graduate Black Hole Radiation: What You Need to Know
  • · Replies 6 ·
Replies
6
Views
3K
Big Bang Theory Court Case: Guilty or Innocent?
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Can General Relativity Explain the Universe's Expansion and Time?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad What Triggers Hydrazine Decomposition in Space?
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad What happens to stars smaller than ours?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad What Causes Planetary Nebulae to Form?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Evidence against existence of dark matter?
  • · Replies 3 ·
Replies
3
Views
4K
High School Space Ship One (SS1): Breaking the Sound Barrier and Making History
  • · Replies 2 ·
Replies
2
Views
4K
Is Vega visible from Atlanta now?
  • · Replies 10 ·
Replies
10
Views
4K
SpaceShipOne reached 100 km this morning
  • · Replies 6 ·
Replies
6
Views
2K
Private Rocket Plane Makes Historic Space Flight
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Is the Red Shift of Distant Stars Really Due to Cosmic Expansion?
  • · Replies 3 ·
Replies
3
Views
3K
High School If the Earth was a giant metal cube..
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Nonspecialist qstns:ie, massless=no space?
  • · Replies 1 ·
Replies
1
Views
2K
High School What is the nearest supernova candidate (maybe Betelguese?)
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How gravity arises from spacetime curvature?
  • · Replies 29 ·
Replies
29
Views
5K
High School What was the bright flash I saw in the sky last night?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What happens to a star in orbit around a black hole?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Extra-solar Planets : Mass vs. Orbital Distance
  • · Replies 6 ·
Replies
6
Views
9K
Undergrad Sedna's Orbit: How Gravity Keeps it Tied to Our Solar System
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Intergalactic doldrums - flotsam and jetsam
  • · Replies 9 ·
Replies
9
Views
3K
High School Understanding Binary Stars: Types and Definitions
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Are there advantages to launching space missions from the Arctic/North Pole?
  • · Replies 9 ·
Replies
9
Views
4K
High School Universe Expansion: How Space is Created
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Move something about the size of the ISS
  • · Replies 8 ·
Replies
8
Views
3K
High School Universe Ingredients: What Makes Up Our Universe?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is Spacetime a Dynamic Entity Influenced by Motion and Antimatter?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Can the Space-Buoy Determine Universal Rest in a Relativistic Inertial Frame?
  • · Replies 22 ·
Replies
22
Views
4K
Kerry's vision for the space program
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad G.warming: something to wobble about
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Is Quantizing Spacetime Possible According to the 2nd Law of Thermodynamics?
  • · Replies 25 ·
Replies
25
Views
6K
Graduate Can Time and Space has Duality ?
  • · Replies 2 ·
Replies
2
Views
3K
Whatever happened to the Mars rovers?
  • · Replies 4 ·
Replies
4
Views
8K
  • Poll Poll
Undergrad Evaluate my brand new program satelite motion around earth
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Challenges of Life on Extra-Solar Planets: A Review of Latest Findings
  • · Replies 2 ·
Replies
2
Views
2K
High School Venus Transit: Why Does It Look Like It Changes Direction?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Shapiro Effect and Gravitational Lensing
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Gravity and Energy Conservation in Stars: Understanding Gravitational Collapse
  • · Replies 1 ·
Replies
1
Views
2K
High School How much fuel does cassini have on board?
  • · Replies 2 ·
Replies
2
Views
4K
High School Help Distance between Mu Leporis & Nihal?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Can We ever Hear Gravity's Music ?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Transit of Venus mathematics please.
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Voyager: How Did They Navigate Unknown Worlds?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad How Does Gravity and Center Influence Orbit in Astro-Physics?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Detailed Mass-Luminosity Relation for Main Sequence Stars
  • · Replies 12 ·
Replies
12
Views
15K
Graduate Mars Exploration-is Human Settlement Possible?
  • · Replies 18 ·
Replies
18
Views
7K
Undergrad Odd Black Hole Defies Explanation : space.com
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Most complex extraterrestrial molecule
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Temp increase of sun from photosphere to corona
  • · Replies 5 ·
Replies
5
Views
9K
Graduate Red Shift caused by space itself ?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Calculating Minimum Distance between Elliptical Orbits | Orbital Distance Forum
  • · Replies 2 ·
Replies
2
Views
3K
Transit of Venus - Witnessed by Excited Friends on a Hazy Day
  • · Replies 4 ·
Replies
4
Views
3K
  • Poll Poll
Stargazing What's Happening for the June 8th Eclipse of Venus?
  • · Replies 28 ·
Replies
28
Views
4K
Conjunction of Venus and Sun a rare event
  • · Replies 10 ·
Replies
10
Views
4K
Graduate How Did Time Begin After the Big Bang?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Question-can a neutron star shed mass?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Universe's Energy Creation and Big Bang: 4 Questions Answered
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Modeling a Star: Struggling with Newton-Raphson Technique
  • · Replies 1 ·
Replies
1
Views
3K
High School What periodic motion is used as a reference
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Cosmology: Expansion & Redshift Explained
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Is Our Understanding of Gravity and Entropy Incomplete?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Orientation of virtual particle pairs in local fields?
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Does Zero Point Energy Influence Gravitational Effects in Space?
  • · Replies 15 ·
Replies
15
Views
21K
Graduate Size of universe and uncertainty principle
  • · Replies 7 ·
Replies
7
Views
3K
High School How fast is earth moving trough space?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Where can I find comprehensive formulas for Celestial Mechanics?
  • · Replies 9 ·
Replies
9
Views
5K
High School Why do all the planets orbit the sun?
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad How Do I Convert the Gravitational Constant to Pixels?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Analogous Hawking Radiation from Astrophysical Black Hole Accretion
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Can Dark Energy Influence the Minimum Unit of Space in the Universe?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Dual Planetary Life: Is It Possible?
  • · Replies 11 ·
Replies
11
Views
5K
High School Can an Asteroid Really Destroy Earth in 800 Years?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate How the calculated total velocity derived ?
  • · Replies 4 ·
Replies
4
Views
10K
Undergrad Redshift & Expansion: What Else Is There?
  • · Replies 32 ·
2
Replies
32
Views
6K
Undergrad A simple explination of why clocks move faster in space
  • · Replies 19 ·
Replies
19
Views
13K
Stargazing Spitzer Telescope spies 'youngest' planet
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad What Would a Martian Calendar Look Like for Well-Established Colonies?
  • · Replies 5 ·
Replies
5
Views
5K
High School Predict Clear Skies: Easy Ways to Forecast Stargazing Nights
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Superconductive Planck/Scale Space
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Calculate the gravitational field of a object
  • · Replies 2 ·
Replies
2
Views
2K
High School When will the Stars Die Out? - What Makes It?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad What are the Characteristics of Short Gamma Ray Bursts?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Entering the Sphere of Influence
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Investigating Anomalous Acceleration of Pioneer 10
  • · Replies 14 ·
Replies
14
Views
3K
Graduate And the question remains, is our Universe really a Hologram?
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Understanding Galaxy Formation and the Factors Influencing Their Size
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Virtual particles and cosmological expansion
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Looking for a *3D navigable* star map.
  • · Replies 8 ·
Replies
8
Views
9K
Technical name for the moon is Irene
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad How Can I Simulate a Star Collision on a Computer?
  • · Replies 2 ·
Replies
2
Views
2K
Compatibility of Orion Solar Filter for Celestron 60 AZ Model
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Neutron stars seem an oddity to me
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Is Space-Time Lattice or Continuum: What Are the Implications for Physics?
  • · Replies 8 ·
Replies
8
Views
4K
How Far Have We Explored the Universe in Search of Alien Life?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Geosynchronous station keeping
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Spaceships a'turnin round and round - in space
  • · Replies 5 ·
Replies
5
Views
5K
High School What Substances Exist in the Atmosphere of Our Galaxy?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate How much is space actually bent by mass?
  • · Replies 4 ·
Replies
4
Views
4K