The asteroid 2024 YR4 — the one that caused a stir earlier this year due to its potential collision course with Earth — has ... direction to its orbit around the sun — offers a key clue ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

A description of why and how the shape of the Moon appears to change when seen from the Earth. The Moon is lit by the Sun. Half of the ... As the Moon starts to orbit Earth we can see more and ...

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, which is roughly the size at which an asteroid could take out a city, or ...

A description of why and how the shape of the Moon appears to change when seen from the Earth. The Moon is lit by the Sun. Half of the ... As the Moon starts to orbit Earth we can see more and ...