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May 25 new moon is a supermoon

It’s not just any supermoon, but the closest and largest supermoon of 2017. The young moon that follows this new moon will mark the beginning of Ramadan.

Star of the week: Polaris, the North Star

The entire northern sky wheels around Polaris. But it’s not the brightest star in the sky. In fact, Polaris ranks only 50th in brightness.

Denmark’s never-ending May twilights

Happening now in Denmark: “bright nights,” when the sun is never far below the horizon. Photographer and videographer Adrien Mauduit tells the story and provides stunning imagery.

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.

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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?

2017’s closest supermoon is May 25

For the 1st time since 2009, a new moon – not a full moon – will be the closest and largest supermoon of a year.

Tides, and the pull of the moon and sun

Expect higher-than-usual tides for a few days following the May 25, 2017 new supermoon.

2nd-warmest April and year-to-date

And, at both the poles, sea ice extents were at or near record low levels, according to the National Oceanic and Atmospheric Administration.

Where’s the moon? Waning crescent

You might catch the old moon near Mercury Tuesday morning. Next new moon – a supermoon – will be Thursday, May 25, at 19:44 UTC.

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.

The story behind the 2017 eclipse stamp

A 1st-of-its-kind stamp that changes when you touch it, commemorating the August 21, 2017 total solar eclipse. Fred Espenak – whose photos are on the new stamp – tells the story.

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.