On June 15, a monster black hole started showing signs of extraordinary activity that hasn’t happened since 1989. Astronomers around the world are watching.
Posts by EarthSky
Not just any loud sound will shatter a glass. It has to be the right resonant frequency.
Scientists have cooled a molecule down to 500-billionths of a degree above absolute zero, a million times colder than interstellar space.
Why do people gather at Stonehenge in England on the solstice? Info and photos here.
How sunlight falls on Earth’s surface during the solstices and equinoxes, as seen from geosynchronous orbit.
Researchers have found new evidence that some Venusian volcanoes may still be active
When Sony stopped manufacturing replacement parts for its Aibo pet robot, owners scrambled to save the robot-dogs that had become part of their families.
It’s possible to see the whole circle of a rainbow – but sky conditions have to be just right. Plus you have to be up high!
Venus and Jupiter are converging for a must-see close encounter at the end of June. It could be the best backyard sky show of 2015.
As the New Horizons spacecraft speeds closer to its July flight through the Pluto system, we’re seeing an increasingly complex surface. Best views yet.