Astronomy, Astrophysics, Cosmology Forum

Graduate A universe with no beginning or end

Graduate Black hole event horizon as surface of spacetime symmetry

High School Is There a Giant Black Hole at the Centre of the Universe?

Graduate Do rivers and whirlpools of spacetime exist with superluminal flow?

Graduate Why does matter in solar systems settle into a flat plane?

High School 200,000 years for 1mg of antimatter?

High School Europa and the possibilty of habitibility

Graduate Does dark energy acceleration lead to a cyclic universe?

Graduate Why does light change wavelength without an ether to carry it?

Graduate Is There Hope for Safe Passage Through Cauchy Horizon Singularities?

• Poll

High School When will we have a Mars Landing?

Graduate Magnetic Fields of Neutron Stars

Graduate Was the formation of our galaxy inevitable

Graduate What exactly will happen if the big rip occurs

Graduate New Hubble Measurements Challenge Physicists: Space May be Smooth

Graduate Can quantum fluctuations create multiple universes with different laws?

High School Why does Pluto have such an unusual orbit?

Graduate Does Kepler's 3rd law relate gravitational force to kinetic energy per radius?

High School Why are space and time treated together in physics?

Graduate Uniform vs progressive solar system formation

High School What is redshift?

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 doesn't gravity slow the universe's expansion?

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

High School Can two planets have perpendicular orbits relative to others?

High School Was Pluto a satellite of Neptune before becoming a planet?

Graduate What is time as a dimension in relativity?

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

• Poll

Graduate Will we ever produce a theory of everything in physics?

Graduate Two Black Holes. No singularity.

High School How Do Stars Burn in Space Without Oxygen?

High School Will the universe end in a Big Rip, Big Crunch, or expand forever?

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

Graduate Is There More to the Universe Than We Think?

Graduate Did the Big Bang originate from a black hole singularity?

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?