News | Page 100 of 707 | Astronomy.com

Exoplanets, Exotic Objects, Planets

Is Planet Nine a black hole or a planet? Harvard scientists suggest a way to find out.

An elemental problem with the Sun

Exoplanets, Planets

Light pollution: A crucial test of humanity’s problem-solving skills

Robotic Spaceflight, Solar System, Space Exploration

Pluto revealed: New Horizons’ historic flyby, five years later

Solar System, The Sun

Powerful eruptions on the Sun might trigger earthquakes

Stellar neighbors close-up

How stars are born and die

Photo gallery: Comet NEOWISE shines in the morning sky

The Sky This Week: Watch Comet NEOWISE morning and night

Robotic Spaceflight, Space Exploration

Vanguard 1: Earth’s oldest artificial satellite that’s still in orbit

A fresh look at a cosmic “jewel bug”

Deep-Sky Objects, Robotic Spaceflight, The Sun

Astronomers think they can find the Sun’s lost siblings