The world's fastest attack submarine: Legend of Project 705 Alfa
Submarine attacking Lira class or Russia's Project 705 Alfa still holds the title of the world's fastest submarine at a speed of 76km / h.Admire the beautiful array of astronomical images celebrating Hubble's 25 years old
Launched on April 24, 1990, Hubble was initially considered a failure. The optical lens's main lens is deflected, making it become more visible