Astronomy, Astrophysics, Cosmology Forum

Graduate Question concerning density of dark energy

High School Is the fabric of space displaced by a mass object in it?

Graduate How Does the Velocity of Distant Stars Relate to the Mass of the Universe?

Graduate Non-anthropic String Theory Landscape and Finite Universes

Graduate Five Cepheids Detected on the Other Side of the Galaxy

Graduate Is the concept of finite mass-energy in the universe outdated?

Graduate Need rebutal for plasma EU theory

Graduate Friedmann's Acceleration Equation

Graduate Could Supermassive Black Holes At The Center Of Galaxies Be Wormholes?

Graduate How does a nebula form from a neutron star

Graduate Is Inflation Eternal Into the Past?

Graduate DeSitter and AntiDeSitter Universe

Graduate Conservation of Energy in the Universe at Large

Graduate Can a Big Rip occur in a flat universe?

High School Is Saturn the Night Object in Photos?

Graduate Did Electrons Form Before Quarks? Chronology of Universe's Reheating Phase

Undergrad Can dark energy be a different dark matter?

Graduate Cosmology for Enthusiasts: Understanding Bicep2 Data

Undergrad Detect planets in solar systems like ours

High School How do outer layers rebound off a neutron star?

Graduate A few questions about size and shape

Graduate Solar Wind Modulates Lightning - Mechanism Unknown

Graduate Baryonic acoustic oscillations and density perturbations

Undergrad Inverse square law explains Olbers' paradox?

Graduate Must the curvature of space be constant?

Graduate Superconductors and Space: Can Electricity Bend Reality?

High School How does Andromeda look from just a set of 10x50 binoculars.

Stargazing Telescope to see up close to nebulas and galaxies

Stargazing The What telescope are you using thread

Graduate Bianchi Models and Kantowski-Sachs

Graduate CMB and Absolute Rest: Resolving Contradiction

Graduate Finding a constant in an expanding universe

Graduate Why did inflation expand the universe faster than current dark energy expansion?

High School The idea of the universe repeating itself is troubling me

High School What would gravity be in these 2 conditions

Graduate Higgs field in the early universe

Graduate Increasing energy scale in an expanding Universe?

Graduate Recommendations for astrophysical simulation software.

Stargazing Remote Telescopes for New or Old Astrophotographers

Graduate Can Black Holes Have Poles Like Planets?

Graduate Faith of Quantum Entanglement once it enters two different black holes

Graduate New paper says universe not expanding - should it be taken seriously?

Graduate The Hawking radiation and information paradox

Undergrad How to calculate absolute magnitude of a stellar body?

Graduate Definition of hypersurface orthogonal

Graduate Why does the furthest stars seem to be moving away faster than light?

Graduate Are Flat, Coplanar Orbits Only Found in Spiral Galaxies?

Stargazing Can a Simple 80x Telescope Reach Maximum Resolution?

Graduate Why does the CMB show temperature variations much larger than 1 in 100,000?

Undergrad Apparent Magnitude: Understanding Star X's Brightness

Graduate Do clocks speed up in an expanding Universe?

Graduate Why do we need dark matter particles if black holes could explain galactic rotation?

Graduate Dark matter and weighing galaxies

Graduate BOSS questions cosmological constant (undecided)

Graduate Expanding universe - energy/information conservation

Graduate Finding the mass of a super-massive Black Hole?

Graduate Could dark matter be remnants of matter-antimatter collisions?

Graduate Cosmic Dynamics - Cosmological Constant

Graduate Is Dark Matter Filling the Universe's Voids?

Graduate A question on the meaning of dark energy

High School Why do I see stars as a point in the sky?

Undergrad How to look at stars to go back in time?

Graduate Could universe expansion be local space contraction instead?

Graduate What Evidence Supports Sagittarius A* as a Supermassive Black Hole?

Undergrad Amount of solar energy per day in a given location

High School Are There Many Suns in the Universe? A Debate

Graduate Establishing a Mutual Coordinate System for Interstellar Communication

Graduate "Implausibly Large Structure" in the Universe

• Poll

Undergrad Is a black hole colorless rather than black?

Graduate Does blue-shifted violet light from an approaching star become x-rays?

Graduate Could Dark Matter Be A Property of Space?

High School Can we walk on Jupiter if it's a gas planet?

High School Why does the Sun appear to change color throughout the day?

Undergrad How do scientists measure Earth's distance from the sun?

Graduate Hubble's Law and Acceleration: Are Distant Objects Accelerating Away from Us?

Undergrad Why does the speed of light never slow down?

Graduate Will the Cosmos Expand Forever or Collapse?

Undergrad What Are the Best Resources for Understanding Star Clusters?

Graduate Where does new space come from as the universe gets bigger?

Graduate A couple of questions about singularities

High School Can a triple star have a planet around it ?

High School How Do Objects Hang in Outer Space?

Graduate Sun can absorb almost 200,000 more Suns?

Graduate Do heavier elements break down during supernova?

Graduate Literature on the beginning of time for an astrophysics background

Undergrad How did the Big Bang create matter from nothing?

Graduate Hawking Radiation and the Decay of Black Holes

Graduate Status of Cosmic Strings and Stringy Inflation

Graduate Could light explain dark energy?

Graduate Is The Universe A Closed System?

Stargazing Telescope that can easily be connected to a laptop

Graduate A model of galactic star formation

Graduate Dark energy and the CMB cold spot

Graduate The first realistic virtual universe created

High School App/program that allows you to adjust spectrums of light?

Graduate Does Interstellar Gas Affect Atmospheric Seeing in Ground-Based Observations?