5,200 tons of extraterrestrial dust fall on Earth each year

DARPA has awarded contracts for the first phase of the Demonstration Rocket for Agile Cislunar Operations (DRACO) program. The goal of the DRACO program is to demonstrate a nuclear thermal propulsion (NTP) system above low Earth orbit in 2025. [General Atomics, Blue Origin, and Lockheed Martin]

A small, car-sized asteroid just gave Earth a close shave

45,000-year-old human genomes reveal extent of Neanderthal interbreeding