Even teeny objects obey the law of gravity. A gold ball just 2 millimeters wide, with a mass of about 90 milligrams, is now the smallest object to have its gravitational pull measured. Observations of ...

NASA’s SphereX mission is scheduled to launch in June 2024 and fly on a small spacecraft built by Ball Aerospace. Credit: NASA/JPL-Caltech BAE Systems’ $5.55 billion all-cash purchase of Ball’s ...