By measuring the mass of a nearby dwarf galaxy called Triangulum II, researchers may have found the highest concentration of dark matter in any known galaxy.
Only about 5% of the universe consists of ordinary matter such as protons and electrons, with the rest being filled with mysterious substances known as dark matter and dark energy.
Astronomers have discovered a giant swirling disk of gas 10 billion light-years away—a galaxy-in-the-making that is actively being fed cool primordial gas tracing back to the Big Bang.
After two-years of upgrades and repairs, the Large Hadron Collider is back in the particle-smashing business—this time at double the energy of its first run.
The nature of dark energy is one of the most important unsolved problems in all of science. But what, exactly, is dark energy, and why do we even believe that it exists?
A newly discovered dwarf galaxy orbiting the Milky Way appears to be radiating gamma rays—a sign that dark matter may be lurking at the galaxy’s center.
The Earth’s infrequent but predictable path around and through our galaxy’s disc may have a direct and significant effect on geological and biological phenomena on Earth, according to new research.