A new study recommends we stop looking for megastructures and start searching for advanced civilizations who have moved multiple planets in their star's habitable zone.

On Sunday, September 24th, NASA's OSIRIS-REx mission will deliver samples from the asteroid Benny.

Our biology limits our vision. Our eyes can only perceive specific wavelengths of light. But what if we could see the Universe in gravitational waves? A new NASA simulation mapped out hundreds of collisions between dense objects, like white dwarfs, neutron stars, and black holes. These collisions happen within galaxies, sending ripples of gravitational waves across the Universe, and would allow astronomers to recreate the shape of galaxies over time. Upcoming observatories will detect tens of thousands of ultra-compact binary stars, providing even higher resolution—an entirely new way to observe the Universe.

The first stars in the Universe were enormous, made of primordial hydrogen and helium from the Big Bang. They lived short lives, exploded as supernovae, and seeded nearby nebulae with heavier elements that began the next generation of stars. Our telescopes aren't powerful enough to see them yet, but have astronomers found their direct descendants? The metal-poor stars in the galactic halo seem to show the imprints from those first stars and could offer valuable clues about the first stars in the Universe.

Dark matter might have its own force, mediated by dark photons similar to the way electromagnetism is mediated by photons. A new study shows that not only are dark photons consistent with experiments in particle physics, they could also solve the g-2 anomaly for muons.