planets

While the celestial event has been occurring all week (and all month in some form) experts say the best time to see it will be early Friday morning.

A rare 5-planet alignment will be visible to skywatchers in the predawn sky beginning this weekend and lasting throughout the month.

Five planets will be visible to stargazers without a telescope beginning this weekend and lasting through the end of June.

The midmonth alignment is a relatively unusual opportunity for people to see multiple planets in the sky with the naked eye.

China has had some notable space successes in the past few years including sending an uncrewed mission to Mars and starting construction of its own space station.

Earth’s core is cooling at rates faster than previously thought, which could speed the planet’s inevitable march toward inhabitability millions or billions of years from now, researchers said this week.

For the first time, astronomers have observed the final days and death throes of a red supergiant star before its final collapse and massive explosion into a supernova.

Michael Brown, best known as the Caltech scientist who “demoted” or “killed” Pluto, believes there is a ninth planet in the far reaches of the solar system that has not been discovered yet. The man whose team previously discovered dwarf planets Eris and Sedna explains his hunch about the next planet out there.