Science Channel to Celebrate 25th Anniversary of Hubble Space Telescope, 4/19

Since 1990, the Hubble Space Telescope has opened our eyes to the infinite universe, showing us wonders we never knew existed. Far from an ordinary telescope, the Hubble is our eye in the sky, orbiting Earth from the vantage point of space. The Hubble is one of NASA's most successful Science missions to date and has helped to provide scientists with answers to some of our most perplexing questions including the age of the universe, the existence of supermassive black holes and so much more. Science Channel invites viewers for a very special 25th anniversary, as we take a look back at this monumental scientific marvel with three hours of special programming on Sunday, April 19 at 8 PM ET/PT.

Episode listings below -

MISSION CRITICAL: HUBBLE

Sunday, April 19 at 8 PM ET/PT on Science Channel

This is the story of a space mission like no other: Seven astronauts. One objective. A single shot at success. The crew of the Space Shuttle ATLANTIS launches with a goal of repairing and upgrading the Hubble Space Telescope, mankind's greatest scientific instrument. But this is no ordinary spaceflight. They'll go further and higher than any mission since the moon landings. The work will be the most technically ambitious ever performed in space. It's the last chance to save our eye on the universe. Take an all-access ride along with NASA's finest.

HOW THE UNIVERSE WORKS: BIG BANG

Sunday, April 19 at 9 PM ET/PT on Science Channel

This is the greatest story ever told, the creation of everything us. The program investigates how the Universe came into existence out of nothing, and how it grew from a miniscule point - smaller than an atomic particle - to the vast cosmos we see today.

HOW THE UNIVERSE WORKS: ALIEN GALAXIES

Sunday, April 19 at 10 PM ET/PT on Science Channel

Galaxies, home to stars, planets and us, come in all shapes and sizes. Witnesses the evolution of galaxies; from clouds of cold gas floating in the voids of space 13 billion years ago, to the magnificent spirals that fill our night sky.