Astronomy, Astrophysics, Cosmology Forum

High School Solar System Similar to Ours Found

Undergrad How Do Black Hole Schematics Work?

Undergrad Out there physics/astrology question

High School Mystifying Star: Spinning So Fast It's Flattening Out?

High School Scary Statistics: American Beliefs from 2002-1969

Graduate Solving the Mysteries of Galaxies

Undergrad Calculating Galaxy Coordinates to Avoid Star Misplacement

High School What Are the Latest and Upcoming Missions to the Outer Planets?

Graduate Second black hole may lurk at Milky Way's heart

Graduate So, what is the right question to ask about this topic?

High School Moon-Earth Position: Apollo 8 Photo Examined

Graduate The Direction of Space: Is Light Traveling Around the Periphery?

Graduate Could Sub-Universes Exist Within an Infinite Multiverse?

Graduate Is the Universe Shaped Like a Three-Torus?

Graduate Age of a Distant Galaxy: Is It Double?

Undergrad Big Bang vs White Hole: The Truth Revealed

Graduate 96 percent of cosmos puzzles astronomers

Graduate Does the Universe Behave Logically or Illogically?

Graduate What Are Supernumerary Dimensions and Their Role in LQG Theory?

Graduate How Does Gravity Affect Light?

Graduate Are There Viable Alternatives to Dark Matter in Explaining Galactic Motion?

Graduate What are Stephen Hawking's Calculations on the Eternity of the Universe?

Graduate Reverse Time in Big Crunch: Is It Real or Just a Flawed Logic?

Undergrad Understand Doppler Effect: Hubble & Stars Moving Away

Graduate Strange star puzzles astronomers: BBC

High School Absolute zero for the boomerang nebula?

High School Is the Sun More Spherical or Oval? Investigating the Shape of Our Closest Star

Graduate Will Earth's Moon Follow Other Moons into a Ring System?

Graduate The Infinity Experience: Can we truly comprehend infinity?

High School A question of Planetary formation.

Undergrad Dark Matter: What Is It & How Will It Change Astronomy?

High School Slowing Down a Telescope: Showercaps, Endcaps & Dustcovers

Graduate Does nonbaryonic dark matter exist?

Stargazing Need advice/opinions on a telescope

High School Source of Energy for the Rotation of Earth

Graduate Universe can surf the Big Rip; Nature article

Graduate What Can We Truly Know About the Universe?

Undergrad The Moon's Impact on Earth: What Happens Without It?

Graduate Solving Hubble Constant with rhocrit and Cosmological Constant

• Poll

Graduate Fact or Fiction? Cosmology Statements

Graduate Is the Expansion of Space Truly Universal?

• Poll

Graduate What is the current radius of the observable universe?

Graduate Light Years And Expanding Universe

Graduate Iron Fusion in Stars: Uncovering the Mysteries of Heavy Elements on Earth

Undergrad Information request about Galaxies

High School Discover the Speed of Our Solar System

Graduate Understanding the Sun's Gravity and Its Impact on Planetary Orbits

Graduate Notion of matter, space and time

Graduate Estimating Critical Mass for Expansion

Graduate Space Genetics: A Weird Physics Theory on Mass, Radiation, and the Universe

Undergrad What Caused Uranus' Unique Rotation?

Stargazing Best Telescope Recommendations for City Viewing Near NYC

• Poll

Graduate Which is the metric of the Universe?

Undergrad What is the density in atoms per unit volume of most nebulas?

High School Tevatron Explained: Emmy Noether's Mass Page

Undergrad Question about looking back in time

• Poll

Undergrad What's your estimate of the other Drake equation?

Graduate Why the 4th dimension was created

High School Earth from Mars: Why is it Blurry? | CNN Exclusive

Graduate Local Group Direction & Solar System CMB Motion

Graduate How does this oscillating electromagnetic field keep its information?

Graduate Gravity & Vacuum in General Relativity: Is Space Flat?

Graduate Space: Is it a place? Or is it a physical entity?

High School How does the rotation of the earth around the axis bring about changes

Graduate Unpacking the Quantum Universe: God's Knowledge and the Role of Observations

High School Are There Stars Primarily Composed of Helium?

Graduate 3pi/Lambda = area of cosmological horizon

Graduate Cosmological redshift: how much energy has gone missing?

Graduate Lee Smolin predicted dark energy back in 1995

High School Star Birth: Process & Gravity Effects

Graduate A toolkit for working with natural units

Graduate One theory is that the higgs particle gives matter mass

Graduate What are the galactic coordinates of the Cosmic Microwave Background hotspot?

Graduate How long before the sun goes red giant?

Graduate What is the quantitative understanding of Hawking radiation from a black hole?

• Poll

Graduate What prevents black hole singularities from being reached?

Graduate Understanding Rho Crit: The Critical Density of the Universe

• Poll

Graduate What is the critical density of the universe?

Graduate SauwIs the concept of finite space in infinite time scientifically valid?

Undergrad Are fundamental physical laws dependent on our choice of units of measurement?

Graduate Are There Explanations for Solar Neutrino Anomalies and Hot Jupiters?

Stargazing Effects of a massive object on light and its relation to the 1919 Eclipse

Undergrad Astronomer107 and the surface gravity of a black hole

Graduate What's your favorite brief survey of modern cosmology?

Stargazing Check Out the Lunar Eclipse Tonight - Night Calculator

Graduate Question re GP-3 orbiting gyroscopes test of relativity