While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...

Christy had been imaging Pluto with the USNO's 1.5-meter (4.9-foot) telescope. Because Pluto is so far from the sun — more than 3 billion miles (4.8 million km), on average — it appears as ...

A six-planet alignment or parade will form an arc in the early night sky, peaking in it's visibility Jan. 17-18. We let you ...

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need to know.

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. Unless you’re really on the low end of our listener age bell curve, chances are you grew up learning about our ...

Timing: Dusk after sunset, but before 9 p.m. local time There are eight planets in our solar system and one dwarf planet (Pluto ... ones that you will need a telescope to see.) ...

The telescope at the observatory was equipped with ... Eleven-year-old Venetia Burney of England suggested the name Pluto because the dark, distant planet resembled the abode of the Greek god ...

For a few brief evenings around February 28, every planet in our solar system will be visible at once, with Mercury making a ...

As part of its extensive slate of observations, the James Webb Space Telescope (JWST) recently took a closer look at Pluto's moon Charon, where it helped scientists to make a surprising discovery.

That’s because Pluto was downgraded from a “planet” to a “dwarf planet” in 2016 by the International Astronomical Union (IAU). However, this year a powerful new telescope is coming ...

Generally, the nights of and near the new moon – when the moon is not illuminated – are better for most stargazing experiences. Here are the dates of new moons this year.

Beautiful photos of the six planets aligned in the night sky have emerged online. Mars, Jupiter, Uranus, Neptune, Venus and ...