Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion. We are slightly nearer to our star and receiving more solar energy than we ...

Every January, Earth reaches its closest point to the Sun, known as perihelion. Yet, it’s winter in the Northern Hemisphere. This may seem odd: why is it colder when we’re supposedly closer to the Sun ...

NORFOLK, Va. — The earth’s journey around the Sun is not a perfect circle. Instead, our planet follows a slightly oval-shaped path called an ellipse, meaning our distance from the Sun changes ...

Comet 3I/ATLAS is the third known interstellar object to cross the Solar System, and in a matter of days it will pass the central point in its foray around our corner of the universe. On October 29, ...

Using data collected by NASA's Parker Solar Probe during its closest approach to the sun, a University of Arizona-led ...

A celestial outsider known as 3I/ATLAS has made its closest rendezvous with the sun as it continues to rove through our cosmic neighborhood and add to its growing renown. Originating from a completely ...