Looking for a sky event this week? Check out our full Sky This Week column. November 7: Open cluster M103 shines in the Queen ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called ...

Wausau Pilot & Review Mercury meets Mars as the Moon wanesCentral Wisconsin skywatchers will find this week packed with planetary motion, lunar ...

Researchers at McGill University and collaborating institutions have mapped the atmospheric features of a planetary-mass ...

Ceres is the largest 'asteroid' in our solar system, big enough that it's actually classified as a dwarf planet, like Pluto.

Discover why Earth's asteroid belt is disappearing and what this means for the future of our solar system, including ...

Looking for a sky event this week? Check out our full Sky This Week column. October 27: Jupiter passes south of Pollux ...

Three billion years ago, a sun -like star reached the end of its life, throwing off its outer layers following its red giant ...

A 3-billion-year-old white dwarf, the core of a dead star, consumed an exoplanet from its former planetary system. Credit: NASA / ESA / Joseph Olmsted illustration A dead star core about 145 ...

As if we needed more proof, an internet legend traced the telling pattern of his garage's shadow over the course of a year. Reading time 2 minutes If you’re tired of arguing with flat-earthers the old ...

Inside its boundaries, the magnetic field that radiates away from Earth's interior dips down to an altitude of about 120 miles (200 kilometers) above the planet's surface, which is much lower than the ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...