Astronomy, Astrophysics, Cosmology Forum

High School Redshift Basics: What is the Redshift Phenomenon?

Graduate The Universe In a Nutshell by Stephen Hawking

Graduate Can Multidimensional Space Time Exist?

Graduate The Equivalence of Space and Time: A Hypothesis Supported by Evidence

Graduate Theory expressing the creation of matter in the early universe

Graduate Trouble for discrete space-time?

Undergrad Approximate orbital period for earth's moon

High School Why is the core of our earth so hot?

High School What Keeps the Earth Spinning? What If It Stops?

Graduate Does the universe allow for paradoxes?

Graduate Why is the acceleration of the universe's expansion a mystery?

Graduate Is the Universe Spherical, Cylindrical, or Something Else?

High School Fact or Fiction: 2 Planets Discovered in Perpendicular Orbits?

High School Pluto: Lost Satellite of Neptune or Planet on its Own?

Graduate Understanding Time as a Dimension: A Detailed Explanation

Stargazing What are the latest features and top picks for telescopes?

• Poll

Graduate Is a Theory of Everything Achievable in Physics?

Graduate Two Black Holes. No singularity.

High School How Do Stars Burn in Space Without Oxygen?

High School The Fate of the Universe: Will the Big Rip or Big Crunch be its End?

Graduate What Happens to Homogeneity in a Magnetic Universe of Pulsars?

Graduate Is There More to the Universe Than We Think?

Graduate What Caused the Heat in the Big Bang?

Graduate Are singularities an infinitely large amount of matter

Graduate Density of dark energy in Planck units

Undergrad What is the significance of the LISA project in studying gravity waves?