Related topics: galaxies · stars · black holes · white dwarfs · neutron stars

Hubble tracks down a 'blue lurker' among stars

Our sun is a lonely star. At least half the stars in our galaxy have binary companions. This was nicely illustrated in the Star Wars movie trilogy where Luke Skywalker watched two suns set on the horizon as seen from his ...

Hubble images spiral galaxy NGC 5643

The spiral galaxy NGC 5643 is located roughly 40 million light-years away in the constellation Lupus, the Wolf. NGC 5643 is a grand design spiral, which refers to the galaxy's symmetrical form with two large, winding spiral ...

Hubble captures barred spiral galaxy NGC 1672

This NASA/ESA Hubble Space Telescope image features NGC 1672, a barred spiral galaxy located 49 million light-years from Earth in the constellation Dorado. This galaxy is a multi-talented light show, showing off an impressive ...

Is Betelgeuse actually a binary star?

Betelgeuse has been a favorite among amateur astronomers for many years. However you pronounce it, its unexpected dimming draws even more attention to this red supergiant variable star in Orion. It has a few cycles of variability. ...

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