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When astronomers aimed the Very Large Array at the well-studied galaxy Cygnus A, they were surprised to find a bright new object near the galaxy’s core. Supernova explosion, or a second supermassive black hole?

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

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?

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.

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.

The electromagnetic spectrum describes all the wavelengths of light. From dark nebulae to exploding stars, it reveals an otherwise invisible universe.

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.

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.

New data on the massive molten lake on Jupiter’s moon Io – most volcanically active world in our solar system – suggest 2 lava waves per day, slowly sweeping west to east.

With a final observation of remote galaxy cluster Abell 370, the Hubble Space Telescope’s mind-stretching Frontier Fields program came to an end.