Today in science: Uranus discovered by accident

William Herschel spotted Uranus in 1781 during a routine survey of the stars. It was the 1st new planet found since ancient times.

Today in science: Tau Boötis’ pole flip

Tau Boötis was the 1st star other than our sun seen to undergo a magnetic reversal. This post includes 2 great videos about our sun’s pole flips.

A wide orange outflow of gas, encompassing a blue jet, from a misaligned central point.

Astronomers probe a baby star’s mystery gas flows

They used the ALMA telescope to observe a slow outflow and a high speed jet from a newly forming star. These two streams appear misaligned and were apparently launched from different parts of the star-forming disk.

A spiral galaxy, with globular clusters scattered around it.

How Hubble and Gaia weighed the Milky Way

Scientists used the measured velocities of 44 globular star clusters to measure the mass of our home galaxy, the Milky Way.

Rogue planet floating in space.

There may be 50 billion free-floating planets in our galaxy

There are at least 200 billion stars in our galaxy, and perhaps even a greater number of planets. Now a new study suggests there could be an additional 50 billion rogue planets, not orbiting any stars.

Eclipse shows moon move in reverse

Check out this interesting eclipse of the sun by Earth’s moon on March 6. A NASA spacecraft saw it. During the eclipse, the moon appears to reverse its direction!

What is earthshine?

In the coming evenings, you might glimpse a pale glow on the unlit part of the crescent moon in the west after sunset. It’s called earthshine.

In the foreground, a curve of a rocky planet, with atmosphere above. In the background, a red star.

Clouds for some Earth-sized TRAPPIST-1 exoplanets

The red dwarf star TRAPPIST-1 – about 40 light-years away – has 7 Earth-sized exoplanets orbiting it. A new study puts limits on how many of those worlds have hazy or cloudy atmospheres.

How the moon got its sunburn

Every object, planet or person traveling through space has to contend with the sun’s damaging radiation – and the moon has the scars to prove it.

Watch SpaceX Crew Dragon splashdown March 8

The SpaceX Crew Dragon spaceship will leave the International Space Station and splash down in the Atlantic Ocean on Friday, March 8, 2019. How to watch both events live.