A pulsar is a rapidly spinning neutron star which is the small, incredibly dense remnant of much more massive star. How dense? A teaspoon of matter from a neutron star weighs as much as Mount Everest.
The goal of the mission is to find out how the human body responds to a prolonged stay in space. Watch the launch and watch the arrival.
A 480-million-year-old fossil of a gigantic sea creature is giving paleontologists insights into the ancestors of modern-day arthropods such as lobsters and scorpions.
Some are brave and some are shy.
A friend in Zimbabwe, Peter Lowenstein, captured a rare video last month of a straight lightning bolt. Unlike most lightning which travels in zig-zag fashion and has branches, this single bolt descended in an almost straight line to strike the ground. A lightning expert at Texas A&M called it “extremely rare, indeed very rare … “
Canadian astrophotographer Alan Dyer dropped us a note today about his new 3-minute video of the dancing aurora borealis, or northern lights. It contains time-lapse footage, and still images, shot this February 12 to 21 from the Churchill Northern Studies Centre, Churchill, Manitoba, Canada – which is located directly under the main auroral oval, or zone of greatest auroral activity.
The Dawn spacecraft has made history. It has become the first mission to visit a dwarf planet when it successfully slipped into Ceres’ orbit this morning.
This video traces the history of what most people think they know about snowflakes: that is, that a typical snowflake is a perfectly symmetrical six-pointed star. A new high-speed camera has acquired the clearest pictures ever taken of free-falling snowflakes, showing that our iconic notion of snowflakes as perfectly symmetrical isn’t correct. This camera is now being designed to help keep winter travelers safer.
A quadcopter drone was used to capture this amazing video a year ago. If you watch it all, you’ll see thousands of common dolphins stampeding off Dana Point, California, three gray whales migrating together down the coast off San Clemente, California, plus, toward the end, close-ups from Maui of a newborn Humpback whale calf snuggling and playing with its mom, as an escort whale stands guard nearby. Definitely worth five minutes!
You might be able to see the newly-discovered comet – named C/2015 D1 (SOHO) – in your evening skies. Maybe.