Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

The Gemini South telescope in Chile has been used by astronomers to detect a planet being devoured by its dying host star, a ...

Satellite streaks could spoil about one in three Hubble images, even when the telescope stays above Earth's weather.

Our understanding of the true nature of the cosmos relies on measurements of its expansion, but cosmologists have been ...

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

On December 19, avid skywatchers can catch a glimpse of the mysterious visitor through powerful binoculars or a telescope ...

The interstellar comet 3I/ATLAS is just days away from coming as close to Earth as it will ever get. Here's how you can track it and spot it.

Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles (269 million kilometers) of our ...

The comet—only the third known interstellar visitor to our solar system—will make its closest approach of the Earth this week ...

Jared Isaacman, the billionaire nominated twice to lead the agency, may draw some lessons from the tenure of another NASA ...