Extremely dense planet with an enormous iron core has an 8-hour year

TESS discovers a planet the size of Mars but with the makeup of Mercury

America needs to rethink and reduce the way it generates plastics because so much of the material is littering the oceans and other waters. The United States—world’s top plastics waste producer—generates more than 46 million tons a year, and about 2.2 billion pounds ends up in the world’s oceans.

Iron World Appears to Be Lightest Exoplanet Ever Detected