On February 15, 2013, a small incoming asteroid created a meteor – brighter than the sun – over Russia. It exploded in the air over the city of Chelyabinsk.
Five years ago today, a small, previously unknown asteroid entered Earth's atmosphere at 66 000 km/h and exploded high above Chelyabinsk, Russia, with 20–30 times the energy of the Hiroshima atomic bomb.
The scientific team that used YouTube videos to determine the trajectory of the Chelyabinsk meteor used the same method to track the trajectory of the bright meteor that crossed the sky over Cuba on February 1.
Picture from a crusie ship deck leaving the Havana Harbor at the exact time of the Cuba meteor. Image via Rachel Cook.
Did you know that our planet has radiation donuts? These giant, donut-shaped clouds of radiation are called the Van Allen Belts.
image via NASA/Goddard Space Flight Center/Scientific Visualization Studio
The Mars Opportunity rover, built to last 90 days, has ended its mission after 15 years on the red planet.
The Mars Opportunity rover. Image via NASA.
On this Valentine’s Day 2019, what the world of science suggests about the mystery we call love.
Adrienne Haschke. Used with permission.
“The animal world tells us again and again and again that love is really important.”
Uranus and Neptune – the ice giants of the solar system – are distant worlds last visited by the Voyager 2 spacecraft in the late 1980s. But the Hubble Space Telescope is still keeping an eye on them and their dynamic atmospheres.
Bright and dark storms on Uranus (left) and Neptune (right) as seen by the Hubble Space Telescope in September 2018. Image via NASA/ESA/A. Simon (NASA Goddard Space Flight Center) and /M.H. Wong/A. Hsu (University of California, Berkeley).
A glaciologist has discovered a possible 2nd impact crater buried under more than a mile of ice in northwest Greenland.
The rate of fireballs – or bright meteors – has been observed to go up in the Northern Hemisphere by as much as 30% from February through April. Will it this year?