资讯
8 天on MSN
Scientist challenges world leaders over mystery comet he fears could be alien probe — but ...
Mankind must decide how it’s going to deal with contact with extraterrestrials — and time could be running out, one expert ...
Volunteers in Jakarta tackle tire traps on city streets, collecting tons of nails and metal objects suspected to be placed by vandals to cause flat tires and make motorists vulnerable.
The object had been flying at about 20,000 feet over Lake Huron in a path and altitude that raised concerns about it being a hazard to civilian aviation, according to Air Force Brig. Gen. Pat ...
At least I’m pretty sure of that,” said Mark Kauffmann, who was sitting in the living room around 7 p.m. Feb. 9 with his wife, Theresa, when the object hit the roof.
The found object in this photo isn’t a stuffed animal, but it is stuffed, and rather mysterious, dressed up in a racing suit. We found it in North Tonawanda.
What’s holding humanity back from reaching 1% of the speed of light? In a word, energy. Any object that’s moving has energy due to its motion. Physicists call this kinetic energy. To go faster ...
Today, natural museums have amassed vast collections. The Smithsonian Museum of Natural History alone holds 148,033,146 objects. In recent years, some museums have been putting their objects online.
当前正在显示可能无法访问的结果。
隐藏无法访问的结果