168极速赛车开奖官网 开奖记录、官网直播数据 一分钟历史开奖结果查询 This bizarre ancient predator snagged soft prey
Scientists are rethinking how this extinct creature used the spiky limbs sticking out of its face to hunt.
Scientists are rethinking how this extinct creature used the spiky limbs sticking out of its face to hunt.
These rapidly spinning dead stars send beams of radio waves into space like cosmic lighthouses.
With layers that work like polar bears’ skin and fur, a material absorbs light and keeps it from escaping.
Alka-Seltzer tablets fizzle furiously when dropped into water. Can you make Alka-Seltzer fizz faster or more loudly by changing the water’s temperature?
The shapes can form an infinite tiled pattern that never repeats. The first is a 13-sided shape nicknamed “the hat.”