Zeta Ophiuchus, a massive star plowing through the gas and dust floating in space. Zeta Oph is a bruiser, with 20 times the Sun’s mass. It’s an incredibly luminous star, blasting out light at a rate times higher than the Sun! Even at its distance of
Theoretical physics: The origins of space and time
NASA’s Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon. The subterranean ocean is thought to have more water than all the water on Earth& surface.
Voyager 1 spacecraft's biggest moments are shown in this chart covering the last 36 years. Voyager 1 is almost 12 billion miles away now! and moving at miles per hour!Voyager 1 will be the first ever object we've sent outside our solar system.