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Astronomy & Astrophysics
Astronomy & Astrophysics Bent Light: Hubble Gravitational Lenses Set Up a Dark Matter Test
Dark matter cannot be seen, but it can be weighed, and the best scales in the universe are galaxies that...
Astronomy & Astrophysics Early Company: A Compact Quasar Pair Found at Cosmic Dawn
Building a black hole a billion times the mass of the Sun takes time, and 900 million years is not...
Astronomy & Astrophysics Running on Empty: A Crowded Galaxy Group Drains Its Molecular Gas
Stars form from cold gas, and a galaxy that runs out of it stops making them. Astronomers have known for...
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Quick Reads
Astronomy & Astrophysics Bent Light: Hubble Gravitational Lenses Set Up a Dark Matter Test
Dark matter cannot be seen, but it can be weighed, and the best scales in the universe are galaxies that...
Quick Reads Boxing Clever: Hera Flies Rectangular Orbits Around the Didymos Asteroids
Orbiting a planet is mostly a matter of falling with style. Orbiting a pair of small asteroids is harder, because...
Quick Reads Flat Pack: A Caltech Robot Tests In-Space Assembly of a Truss
Most spacecraft leave the ground fully built and folded into a rocket fairing, and that puts a hard ceiling on...
Astronomy & Astrophysics Deep Field: The Sharpest LOFAR Radio Image Yet Counts 63,000 Sources
Point a radio telescope at an ordinary corner of the northern sky for long enough and it stops looking empty....
Quick Reads Pick a Side: Why Shape Matters for Nuclear Asteroid Deflection
If a large asteroid were found heading for Earth with too little warning to nudge it gently, the last resort...
Quick Reads Powered Swing: ESCAPADE Earth Flyby Sends Twin Probes Towards Mars
Miss a launch window to Mars and the usual penalty is a 26-month wait on the ground. NASA's twin ESCAPADE...