Astronomers may have solved the decades-long cosmic murder mystery of what kills most galaxies in the universe: They are strangled to death, so they can no longer create new stars.
The 'elusive planet' Mercury kicks off the month in the midst of its best evening apparition of 2015. But Mercury isn't the only visible planet this month.
No, this isn't humanity's attempt at laser-etching Saturn's cloudy atmosphere with interplanetary graffiti, this is the stunning view at the bottom of a brand new adaptive optics system intended to superboost the clarity of deep space.
Even with facts on their side, science advocates can lose more than just an argument.
Like a black fog churning through space, this view of a dark molecular cloud seems to extinguish the sparkle of distant stars.
It's Star Wars Day! So take a look back over some of our favorite Star Wars-related Discovery News space stories.
Astronomers have discovered two new alien worlds a bit larger than Earth circling a nearby star.
It's been an eventful 25 years for what turned out to become the world's best-known telescope and perhaps among the most productive science instruments ever made. Here's a look at Hubble's life in pictures.
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