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 ...

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 ...

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

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.

En route to land on the moon, a spacecraft snapped views of Earth eclipsing the sun.. The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on ...

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 ...

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 ...

Unlike our permanent moon, 2024 PT5's relationship with Earth was always destined to be temporary due to the complex interplay of gravitational forces from both the Earth and sun. The asteroid was ...