Space"s Deepest Secrets Show Summary, Upcoming Episodes and TV Guide

Across the Milky Way, galaxies are going dark, and scientists don't know why the stars are losing their shine; astronomers race against time to uncover the truth behind how galaxies are born and how they die before all of the lights go out.

New close-up images of the dwarf planet Pluto, taken by the New Horizons spacecraft, reveal an active world that was once thought to be geologically dead; using cutting-edge technology, experts examine the possibility of alien life on Pluto.  

New discoveries reveal the apocalyptic consequences of an asteroid strike, and using cutting-edge science, experts are racing to develop tech that can destroy these deadly killers before they unleash Armageddon.

New discoveries might finally reveal how supermassive black holes are made, and using the latest technology, experts are on the verge of understanding how these monsters grow and how they affect life on our planet.

Shocking new evidence has convinced some of the world's greatest physicists that the universe is a hologram. Using cutting-edge technology, they investigate the secrets of black holes and space-time to build the case for this game-changing discovery.

New discoveries are helping experts in their search for the first alien moon outside our solar system, which could be Earth-like worlds with the potential for life. So far, they haven't found any, but twenty-first-century methods might change everything.

The new discovery of seven alien Earth-like planets in a faraway solar system is a major milestone in our hunt for extraterrestrial life, and experts investigate the secrets of TRAPPIST-1's mysterious worlds to reveal if we're truly alone in the universe.

New discoveries are changing everything we know about Saturn's rings, revealing that they're newer and more mysterious than we ever imagined and that someday soon they might disappear forever.

New discoveries reveal that everything we know about our moon could be wrong, and now, investigators race to understand the mysteries of its dark and violent past.

The aurora borealis is one of Earth's most incredible sights, and new discoveries finally explain why these mysterious lights appear and what they reveal about the Sun's sinister and deadly powers.

Modern-day explorers are competing in a new space race to send the first people to Mars, and cutting-edge technology might make the Red Planet the next home for human life.

New discoveries change everything known about black holes, and using the latest science and technology, experts reveal secrets to the mysteries behind these strange and deadly places.

New discoveries are helping experts map the entire universe, and they are finding strange truths about the cosmos and its unimaginable size.

Time travel is less impossible than we think, and the newest discoveries in space and theoretical physics have us on the brink of cracking one of the universe's greatest puzzles.

Scientists on the hunt for extraterrestrial life suspect that it might be closer than we think: our very own solar system; using the latest discoveries, experts might, at last, confirm that our neighbors might harbor alien life.

Go inside the final moments of NASA's Cassini mission, a 20-year project to explore Saturn and its moons; Cassini revealed the secrets of strange new worlds that could harbor alien life, changing everything we know about our Solar System.

Space entrepreneurs are on a race to transform space travel to create a home for humans beyond Earth. In this twenty-first century Space Race, modern day visionaries plan regular rocket launches, space hotels, and colonies on Mars.

New telescope technology has helped astronomers to explore the never-before-seen invisible universe. These modern marvels ushered in a new age of discovery, revealing secrets of greatest enigmas in the cosmos, from giant black holes to supernovas.

For decades, researchers have been scouring the universe for signals from extraterrestrials; new discoveries reveal mysterious fast radio bursts from space that may be the key to confirming life in the cosmos.

Scientists believe that there is an undiscovered massive planet lurking at the edge of the solar system. Join researchers as they hunt for this mysterious world, an investigation that could reveal the secret history of the solar system's formation.

New research into our solar system's alien volcanoes reveal shocking discoveries; many of these fiery wonders are similar to the volcanoes on Earth, and some might even have created the conditions for extraterrestrial life.

The genius of Einstein's theory of relativity was the first evidence that black holes might exist, but scientists still don't know what really happens inside of one. Follow the researchers investigating the dark secrets of this mysterious phenomenon.

Counting down the greatest moments in NASA's nearly sixty year history, revealing the incredible stories behind the missions and discoveries that have remade our understanding of the Final Frontier.

Scientists are finally on the hunt to finally crack the dark secrets of the atoms that make up the universe. The scientific quest to crack the secrets of the universe is detailed. Included: whether the rules of physics will need to be rewritten further considering WIMPs (Weakly interacting massive particles) as dark matter particles and other dark matter theories.

The discovery of exoplanets pushes scientists to reexamine the origin of the Solar System; the evidence infers a tale of unrestrained collisions and chaos.

When the sun flares up, billions of tons of superheated gas and intense radiation are propelled toward Earth; experts are trying to predict what is coming toward the Earth and how to prepare for this threat.

The future of space travel is under attack, and it's because of millions of pieces of debris from old satellites and space missions that orbit Earth. Go inside the effort by the US government and others to combat and clean-up the lethal threat of space junk.

Thirty-five years after leaving Earth, the Voyager spacecraft is going to leave the Solar System to tell the incredible story of a mission that was only supposed to last five years but is still going today.

An exploration of the dramatic fate of our future descendants, the technology they'll need to survive the end of this world billions of years from now and our options for colonizing and starting again on a new planet somewhere far from Earth.

From the mission that saw Pluto for the first time to the Mars rovers, a new breed of explorers risk their careers, and even their lives, to lead humanity to worlds we have never seen and tackle the mysteries of life itself.