NASA announced Dec. 10 that for the 2nd time in history, a human-made object has reached the space between the stars.

NASA’s InSight lander has captured the 1st-ever sounds of Martian winds.

At least 18 of the new planets are less than 2 times larger than the Earth, and are likely to have rocky compositions with atmospheres comparable to Earth’s.

How much starlight has our universe produced? According to a new study, stars have radiated 4×10⁸⁴ photons since the start of the universe 13.7 billion years ago. That’s the number 4 with 84 zeros behind it.

For the 1st time, researchers have been able to observe the motion of gas clouds around a central supermassive black hole. This particular black hole powers the famous quasar 3C 273.

It’s been 20 years since the launch of the International Space Station. To celebrate, enjoy this video timelapse of 2 trips around Earth, via ISS astronaut Alexander Gerst. Longest-yet timelapse from space!

It hasn’t been easy for astronomers to peer into the cores of merging galaxies. Dust obscures the view. Now, new research has given astronomers a better look.

Nebula IC 63 – in the direction of our constellation Cassiopeia – is slowly dissipating under the influence of ionizing ultraviolet radiation from a hot, luminous variable star known as Gamma Cas.

Star motions in the Small Magellanic Cloud – as revealed by the Gaia space observatory – confirm that this small satellite galaxy of our Milky Way collided in the past with its larger neighbor.