Let's say we want to build a model of the sun and Earth alone. Earth has a radius of about 6,371 kilometers (3,959 miles), but let's represent this with a marble 1 centimeter in diameter.

The Earth and moon are within view of NASA's Artemis 1 Orion spacecraft. The Earth is over 260,000 miles away (418,000 km) in ...

Moon phases reveal the passage of time in the night sky. Some nights when we look up at the moon, it is full and bright; sometimes it is just a sliver of silvery light. These changes in appearance are ...

Do people (or animals) get crazy? Commit more crimes? The Moon always shows us the same face, but there’s only one instant ...

Mars, Jupiter and Mercury will all appear low in the west after sunset. Look for bright Venus low in the eastern sky for about two hours before the sun rises all month long. The crescent moon and ...

As the moon orbits the Earth and the Earth orbits the sun, the three bodies are forever getting in one another’s way, periodically blocking the view from one to the other.

March's full moon, known as the Worm Moon, will pass into Earth's shadow on the night of March 13, or early on March 14, depending on the time zone, according to NASA. This eclipse will be visible ...

This handout photograph taken by Firefly Aerospace, March 16, 2025, and released on March 18, shows the lunar surface and the setting sun with Earth and Venus on the horizon, during the lunar ...

When the sun, Earth and moon all align so that the moon passes into the Earth's shadow, there's a lunar eclipse. During a total lunar eclipse, like the one happening this week, the entire moon ...

Firefly Aerospace captured a total solar eclipse from the moon on March 14, 2025. This image has a red hue because sunlight refracted through the Earth's atmosphere while the sun was blocked by ...

The Moon used to be much closer to Earth and has been slowly moving farther away over time. Their calculations show that as it moved outward, it would reach a configuration where the orbit "sort ...

The moon, which sure seems pretty old, is actually much younger than we thought. Here’s the true age of the moon.