A total lunar eclipse is set to wow North American astrophotographers on March 3, here’s how to photograph this stellar celestial event, from knowing where and when to choosing the right glass and ...

In late January, SpaceX announced Stargaze, a new SSA service. Stargaze uses data from star tracker cameras on its Starlink satellites to track satellites and debris in low Earth orbit (LEO). The ...

As NASA invites the public to follow the Artemis II mission as a crew of four astronauts venture around the Moon inside the agency's Orion spacecraft ...

Artemis II will send four astronauts around the Moon aboard Orion while the public tracks the mission through NASA’s Artemis Real-time Orbit Website and mobile app.

The Sun is not nailed to the center of the solar system. It moves, wobbles, and traces a small loop through space, tugged by ...

Four planets visible to the naked eye are lining up across the western sky after sunset this week, and the window to see them at their best is closing fast. Venus, Mercury, Saturn, and Jupiter form a ...

Oxygen isotope analysis of lunar soil shows meteorites delivered only a limited amount of water to the Earth–Moon system ...

Students in Greece will revive Eratosthenes' calculation of the Earth’s radius and circumference, a remarkable experiment in science.

Rising sea levels are slowing Earth’s rotation, lengthening how long an average day lasts. And the current rate of increase to a single average day—1.33 additional milliseconds per century—is ...

Astronomers witnessed planets colliding 11,000 light-years away, an event that could shed light on the collision that created Earth's moon.

If I were on Mars, how often would I see Earth transit the Sun? Steven RiserConyers, Georgia From Mars, Earth transits the Sun four times in a 284-year cycle. The transits occur in either May or ...

Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon.