Cosmology
- Physics
Negative mass might not defy Einstein
Repulsive matter could have played a role in the early universe, a computational study finds.
- Cosmology
Galaxies may be aligned across 1 billion light-years
Powerful plasma jets from cores of galaxies seem to mysteriously align with one another and hint at an unknown mechanism shaping galaxy groups.
- Cosmology
Gamma rays offer mixed messages on identity of dark matter
Conflicting results from Fermi telescope puzzle astronomers about dark matter’s true identity.
- Cosmology
‘The Theory of Everything’ reveals Stephen Hawking’s personal side
A new film explores love and science in the life of physicist Stephen Hawking.
- Astronomy
Cosmic jets re-created in a lab
Physicists have recreated in a lab the plasma jets that erupt from young stars and black holes.
- Quantum Physics
Hawking radiation spotted within sonic black hole
Lab-created sonic black hole emits energy as famed physicist Stephen Hawking predicted, though the experiment may not be definitive.
- Cosmology
Answers to questions posed by cosmology to philosophy
Tough questions about the philosophy of cosmology have answers; they just might not be right.
- Astronomy
Nearby galaxy might explain what tore apart universe’s hydrogen
A local galaxy is leaking enough ultraviolet light to ionize surrounding hydrogen, which could explain how the earliest galaxies transformed the universe.
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- Cosmology
Gravitational wave discovery gives way to Milky Way dust
New polarization maps from the Planck satellite suggest that the BICEP2 announcement this year of primordial gravitational waves might be due entirely to dust in our galaxy.
- Astronomy
Mystery of missing lithium extends beyond Milky Way
Stars in cluster Messier 54, part of a nearby dwarf galaxy, have just as little lithium as stars in the Milky Way, suggesting that the mystery of the missing element is universal.
- Cosmology
Cosmologist’s ‘Cosmic Cocktail’ is a refreshing read
Katherine Freese shares her insights as a scientist studying dark matter and other mysterious components of the universe.
