Tonight … Moon near Aldebaran | | Not just near. In fact, the moon occults (covers over) Aldebaran tonight. We're in the midst of a series of 49 monthly occultations of Aldebaran that began in 2015 and will conclude this September 3. | | |
Violent blast from Sinabung volcano | | Mount Sinabung on the Indonesian island of Sumatra erupted violently on February 19. See video of the dramatic first moments of the eruption. | | |
Watch an octopus get spiky | | Octopuses and cuttlefish have an amazing defense tactic. They can erect 3D spikes from their skin, hold them for an hour, then retract them and swim away. | | |
Mars rover finds possible rock stripes | | The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from repeated freezing and thawing of wet soil. | | |