Posted: Sat, Feb 29, 2020, 7:55 AM ET (1255 GMT)
Astronomers have discovered a small, temporary second moon orbiting the Earth. The object, 2020 CD3, was seen in mid-February and may be a small asteroid, only several meters in diameter, captured by Earth's gravity in the last 12 to 18 months. Astronomers can't rule out that the object is a rocket stage or other piece of space debris. Whatever its nature, gravitational perturbations mean the object will leave orbit in about two weeks.

Related Links:

•  New York Times article
•  Space.com article
•  NBCNews.com article
•  Washington Post article
•  NSF National Optical-Infrared Astronomy Research Laboratory press release