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Brown dwarf launches a vast jet

For the first time, astronomers have found a spectacularly long jet – nearly a light-year long – from a brown dwarf.

Does our sun have a name?

You’ve probably heard star names, such as Polaris or Betelgeuse. But what about our star? Does the sun have a name, and if so what is it?

See Ceres opposite the sun

Dawn mission specialists maneuvered the spacecraft into a special orbit, so that it could look down on Ceres’ famous bright spots from a position known to astronomers as opposition.

A moon for the 3rd-largest dwarf planet

So many moons! With the discovery of a moon for 2007 OR10, most known dwarf planets in the Kuiper Belt – larger than 600 miles across – now are known to have companions.

A giant magnetic bridge between galaxies

Known as the Magellanic Bridge, it’s a huge stream of neutral gas stretching 75,000 light-years between the 2 Magellanic Clouds, which orbit our Milky Way.

How long to travel to Alpha Centauri?

The distances between stars are vast, which is why star travel is so far. Read here about conventional propulsion and warp drives, plus about Breakthrough Starshot’s new idea to send nanostarships to Alpha Centauri.

What’s the weather like on Proxima b?

The nearest known exoplanet – orbiting the star Proxima Centauri – is only 4.2 light-years away. Does it have liquid water? An atmosphere? Weather? Scientists just announced the first tentative steps to explore those possibilities.

Planet circus in May, with explanation

A beautiful spatial view of our solar system from Guy Ottewell, showing the planets’ paths along their orbits in approximately mid-May, 2017, with sightlines to them from the Earth.

Eta Aquarid over Mount Bromo

Cool short video of an early morning Eta Aquarid meteor over Mount Bromo in Indonesia, by Justin Ng. Take a few seconds and enjoy!

Watch 200th spacewalk Friday

Watch 2 astronauts perform landmark 200th ISS spacewalk on Friday, May 12. Live coverage begins at 6:30 a.m. EDT (10:30 UTC). Links to viewing here.