A very small asteroid discovered on Nov. 29 is on a path which will bring it very close to Earth on the evening of Dec. 1, but there is no chance that the asteroid could impact our planet. Only about 3 meters (15 feet) in size, the object is predicted to pass so close to Earth that it will be well within the so-called geosynchronous orbit of communications and weather satellites, about 36,000 kilometers (22,000 miles) above the equator.
In November 2017, scientists pointed NASA's Spitzer Space Telescope toward the object known as 'Oumuamua - the first known interstellar object to visit our solar system. The infrared Spitzer was one of many telescopes pointed at 'Oumuamua in the weeks after its discovery that October.
NASA's Center for Near-Earth Object Studies Enters Third Decade.
On March 11, 1998, asteroid astronomers around the world received an ominous message: new observational data on the recently discovered asteroid 1997 XF11 suggested there was a chance that the half-mile-wide (nearly one kilometer) object could hit Earth in 2028.
Using observations from NASA's Hubble Space Telescope and ground-based observatories, an international team of scientists has confirmed 'Oumuamua (oh-MOO-ah-MOO-ah), the first known interstellar object to travel through our solar system, got an unexpected boost in speed and shift in trajectory as it passed through the inner solar system last year.
A new multiagency report outlines how the U.S. could become better prepared for near-Earth objects -- asteroids and comets whose orbits come within 30 million miles of Earth -- otherwise known as NEOs. While no known NEOs currently pose significant risks of impact, the report is a key step to addressing a nationwide response to any future risks.