Who’s ready for a “planet parade”? The last planetary alignment was in August 2025, when six planets aligned and four were bright enough to be seen without a telescope. Next week, Mercury, Venus, ...

On Feb. 17, 2026, the moon slipped directly between Earth and the sun, creating a spectacular 'ring of fire' visible to very few people on Earth, but ESA's Proba-2 had had the best seat in the house.

Scientists have mapped the upper atmosphere of Uranus in detail, revealing a cooler, thinner, and more unevenly charged layer around the planet than expected.

A newly identified planet candidate, HD 137010 b, looks strikingly Earth-like in size and orbit — but it may be colder than Mars due to its dimmer star. If it has a thick enough atmosphere, though, ...

Professor of Earth, Environmental, and Planetary Sciences, University of Tennessee If you’ve seen illustrations or models of the solar system, maybe you noticed that all the planets orbit the Sun in ...

This is a brilliant question because the notion of an orbit is counterintuitive. We know that massive objects (really, any objects with mass) gravitationally attract other massive objects; Newton’s ...

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 ...

At the start of the year, Earth will quietly reach a milestone in its orbit around the sun. Known as perihelion, this is the moment when our planet is closer to the sun than at any other point in the ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since April 2024 Look up throughout the year to catch a wide array of astronomical ...

Comet C/2023 P1, Nishimura visible from Earth. Credit: NASA/JPL-Caltech | edited by Space.com Kennedy, other Trump officials balk at requests to testify on Capitol Hill The Fed admits it can’t easily ...

The Cambrian Explosion in which life on Earth underwent massive diversification was likely triggered by eccentricities in Earth’s orbit around our Sun. Or so say the authors of a new paper just ...

As stars like the Sun exhaust their hydrogen, they begin to expand and cool, transforming into red giants. For the Sun, this dramatic change is expected in around five billion years. Scientists ...