Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

What if Venus became Earth's moon? Explore how our planet would change if Earth’s twin, a planet almost the same size and ...

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

The outlook is promising for future long-term monitoring of planets across multiple wavelengths. Infrared imaging data from ...

Japan’s Himawari weather satellites, designed to watch Earth, have quietly delivered a decade of infrared snapshots of Venus.

Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

A newly discovered object called 2017 OF201, likely a dwarf planet, travels in an extremely wide elliptical orbit (yellow), a new study suggests. The orbit of the dwarf planets Sedna and Pluto are ...

If there were one, that Planet Nine would "nudge the closest part of 2017 OF201's trajectory inward until Neptune flung it out of the solar system." Because 2017 OF201 is there, that could be an ...

Sedna will make its closest approach to the Sun in 2076, giving us a rare opportunity to visit the planetoid before it drifts ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

Science. Goodbye to our Solar System as we know it: Astronomers confirm there is a new planet orbiting the Sun beyond Pluto Science. Extraordinary discovery in the animal kingdom: dolphins ...