According to NASA, a monstrous cloud is coming towards our galaxy. The cloud is flying to the Milky Way at a speed of over 300 km/s. There cloud is said to arrive in our galaxy in 30 million years.
The hydrogen cloud-monster is called "Smith's Cloud", in honor of student Gaile Smith, who discovered it back in the 1960s.
It is believed that the Smith Cloud was formed 70 million years ago in outer regions of our galaxy disk. The cloud came off the disk and is now flying back like a boomerang.
When the cloud enters our galaxy, it will trigger the star formation process, and more than two million stars will be born.
The cloud of hydrogen gas is about 11,000 light years long and 2,5 thousand light years wide.
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