Could a collision between 2 asteroids millions of miles away cause an ice age on Earth, some 460 million years ago? A new study of earthly rocks and sediments – plus micrometeorites that fell in Antarctica – suggest it’s possible.
Why is the internet so chock-full of stories about asteroids on a collision course with Earth? At this rate, we should have been obliterated many times over already. Here comes the newest scare story: asteroid 2007 FT3. No, it won’t hit us, either.
Our solar system is getting another visitor from a faraway galaxy. An amateur astronomer from Crimea named Gennady Borisov first spotted the fast-moving fleck in the night sky last month. Since then, both Hawaii’s Gemini Observatory and Spain’s William Herschel…
Loki, the largest volcano on Jupiter’s moon Io, erupts on a more or less regular schedule. Planetary scientists are predicting an eruption this month. Here’s what we know.
What is ULX-4 – a mystery green blob of X-ray light that appeared in the Fireworks Galaxy – and then soon disappeared again? A black hole or neutron star are 2 possibilities.
“We have never seen anything like this in the 24 years we have studied the supermassive black hole. Itâs usually a pretty quiet, wimpy black hole on a diet. We donât know what is driving this big feast.”
It was exciting last week when scientists announced water vapor in a super-Earth’s atmosphere. But, even as the announcement came, other scientists were cautioning that the planet – K2-18b – is probably less like a super-Earth and more like a mini-Neptune.