It’s one of the basic Newton laws: how fast something falls due to gravity is determined by a number known as the “acceleration of gravity”, which is 9.81 m/s2 at the surface of Earth. The acceleration of gravity, shortly “a” means that in one second, any object’s downward velocity will increase by 9.81 m/s because of gravity. The gravity accelerates everything at exactly the same rate.
Continue reading A Bowling Ball and Feather Falling in a Vacuum (video)
An amazing ultra high definition video, from the International Space Station (ISS). The ISS has introduced a new 4K Ultra High-Definition (UHD) video, providing an unprecedented look at what it’s like to live and work aboard the International Space Station.
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Good news! ESA’s (European Space Agency) robotic lander Philae finally received enough solar radiation and now is out of hibernation. On the Rosetta blog, the ESA announced that “The signals were received at ESA’s European Space Operations Centre in Darmstadt at 22:28 CEST on 13 June. More than 300 data packets have been analysed by the teams at the Lander Control Center at the German Aerospace Center (DLR).” It is the first contact with the spacecraft since going into hibernation in November.
Continue reading Philae (Rosetta’s Lander) Wakes Up From Hibernation
There’s a super crappy 1982 science-fiction movie named “The man who saves the world”. The story is absurd – in the opening, a narrator speaks a lot. He tells about somebody attacking on Earth, but a layer made by human brains (?) is protecting our planet. Then the battle begins: two space cadets of the world get shot in the space, crash-land on a desert planet, where an evil wizard seeks the ultimate power to take over the world. Although the movie borrows some background footage from Star Wars, the plot is mostly unrelated.
Continue reading The World Is Going To End, Again, In September 2015? Of Course Not
The National Aeronautics and Space Administration (NASA) celebrates 50 years of spacewalking, or Extravehicular Activity (EVA) with a slogan: “#SuitUp”. The United States government agency, which responsible for the civilian space program as well as aeronautics and aerospace research, will be celebrating accomplishments throughout the year 2015.
Continue reading NASA celebrates the 50th Year of Spacewalking
On December 24, 1968, the crew of Apollo 8, the second human spaceflight mission in the US Apollo space program, were the first humans to witness Earthrise. The “Earthrise” was photographed by astronauts on board Apollo 8. It is one of the most famous photos ever taken and became the symbol of one the greatest explorations in history: human’s first journey to another world, and then the crewmembers looking back, saw their home planet.
Continue reading The first earthrise ever seen directly by humans
Since the “space age” has started in the early 1960s, astronauts have taken more than 1.8 million photographs of the Earth from orbit, and about one-third of them (approximately 600,000) have been taken at night. But they don’t always know what they are looking at. You can help, announced NASA.
Continue reading NASA needs your help to identify cities in the night images
The farthest spacecraft from Earth, Voyager 1Notes 1, took a photo of planet Earth in 1990, from a record distance of about 6 billion kilometers (3.7 billion miles, 40 AU) from Earth. The photo known as the Pale Blue Dot. In the photograph, Earth is shown as a fraction of a pixel (0.12 pixel in size) against the vastness of space. It was a part of the solar system Family Portrait series of images.
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