Astronomy
- Astronomy
Exoplanets need right stuff to be habitable
The elemental makeup of a star can reveal whether planets in its solar system could support sustained plate tectonics, a requirement for Earth-like life, researchers propose.
- Physics
Pulsar pair ripples spacetime
A pair of pulsars gives scientists the best evidence so far for gravitational waves, which have yet to be detected directly.
- Physics
General relativity caught in action around black hole
X-rays enable scientists to spot a black hole twisting the surrounding fabric of spacetime, just as Einstein’s theory predicts.
- Cosmology
Debate grows over whether X-rays are a sign of dark matter
The dwarf galaxy Draco, which is chock-full of dark matter, doesn’t emit a band of X-rays that researchers hoped were produced by the mysterious invisible stuff.
- Planetary Science
It’s a new planet! It’s an unknown star! It’s — oops!
A couple of unexpected wandering points of light in the sky could be new planets or even a dim star orbiting the sun, but researchers have plenty of reasons to be skeptical.
- Astronomy
LISA Pathfinder to pave way for gravitational wave detection
The successful launch of the LISA Pathfinder mission marks the first step toward testing techniques needed to build a space-based gravitational-wave detector.
- Astronomy
Mysterious cosmic signals carry a clue to their origins
A burst of radio waves from another galaxy ran into a dense magnetized plasma while en route to Earth, hinting at an origin near a population of young stars.
- Astronomy
Super-Earths, meet superpuffs, a lighter weight class of planet
Superpuffs are underweight, oversized planets that formed in outskirts of star systems before cuddling up close to their sun.
- Astronomy
More mysterious extragalactic signals detected
Five more fast radio bursts from other galaxies have shown up and one of them is a double.
- Astronomy
Cosmic rays maintain their mystery
Cosmic rays come from all over the universe, including some places we’re not so sure about.
- Astronomy
Early stars found swirling in the Milky Way center
Ancient stars with low iron abundance surround the Milky Way’s center.
- Astronomy
Chile telescope array spots nearby Earth-sized planet
The discovery of GJ 1132b, the nearest Earth-sized planet known beyond the solar system, could herald the era of probing the atmospheres of nearby worlds for signs of life.
