What can star variability—changes in a star's brightness over time—teach astronomers about exoplanet habitability? This is ...

Border Patrol is monitoring US drivers and detaining those with 'suspicious' travel patterns 'Rush Hour 4' will be ...

This year’s ozone hole over the Antarctic ranked as the fifth smallest since 1992, according to a new report by NOAA and NASA ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...

More than 50 times further from the Sun than Earth, the tiny dwarf planet Makemake is one of the last places you'd expect to find an intact gaseous atmosphere. Not only is it incredibly cold, being ...

SEATTLE -- For decades, scientists believed Prochlorococcus, the smallest and most abundant phytoplankton on Earth, would thrive in a warmer world. But new research suggests the microscopic bacterium, ...

TOI-6894 is now the smallest star known to host a transiting giant planet, with a radius 40% smaller than that of any previous such host. Prof. Jamila Chouquar, who was an astronomer at ULiege at the ...

Mercury appears to move backward (retrograde) in the sky. It's visible briefly in the evening sky, low on the western horizon. You'll need binoculars or a telescope to see it. Mercury will disappear ...

Many of the stars in the Milky Way galaxy are small, dim red dwarfs—stars much smaller than the sun in both size and mass. TOI-6894, located far away from Earth, is one of them. Astronomers previously ...

Ultra-accurate simulations of the gravity field guide toward a new mathematical foundation of gravity modelling. A layered Earth. (Courtesy: iStock/AlexLMX) The Earth is not a perfect sphere. This ...

On June 6th, the Moon passed near Spica and Antares, providing an opportunity to observe the globular cluster M4 near Antares with binoculars or a telescope. On June 7th, the Dumbbell Nebula (M27) was ...

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky. Stargazers in the U.S. will need a clear horizon to spot the planetary duo ...