“We are taking active measures to help Earth defend itself against a potential impact.” Juno mission: Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet ...

“We are taking active measures to help Earth defend itself against a potential impact.” Asteroid 2024 YR4 has been a source of consternation because it carries an uncommonly high risk of colliding ...

There are four forces that affect the way an object moves through the air: Weight - The effect of the earth's gravity on ... use a number called the drag coefficient (measured as Cd), a value ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A small space rock ...