Time travel has been the subject of many great science fiction novels and movies, but this video segment considers whether or not it is a real possibility. The segment takes a look at what the experts, like Craig Savage from the Department of Physics at the ANU and Stephen Hawkins, have said on the issue. Do the laws of physics actually permit time travel? And more fundamentally, what is time?

Although he has been missing for several years and the entire town thinks her father has abandoned her family, Meg steadfastly believes the best and protects her younger brother, Charles Wallace, from the brunt of the rumors and taunting. It is he, however, who convinces her to join him, the school sports star Calvin, and three unusual women on an interplanetary voyage to rescue their father from a vast evil.

World-famous scientist Stephen Hawking sets three ordinary people a series of mind-blowing challenges. Can they think like a genius? Can they work out if time travel is possible?

It's the mid-80's, and Marty McFly is your average 17-year-old slacker who happens to be friends with an inventor, Doc Brown. Doc's latest invention is a time machine, that ends up transporting Marty back to 1955 where he must bring his parents together so that he will exist when he gets back to his own time.

Doc Brown has decided to live in the Old West of the 1880's. But when he's in danger of meeting an untimely end, Marty travels back into the past to rescue him. There's just one problem: Doc is so smitten by a schoolteacher that he's become distracted. Now, it's up to Marty to keep Doc out of trouble, get the DeLorean running, and put the past, present and future on track so they can all get back to where and when they belong.

The Eleventh Doctor returns in thirteen blockbuster episodes plus two specials, each a brand new epic adventure with new monsters and familiar foes like never seen before. The first part of this series sees the Ponds in their final voyage with The Doctor. And the final eight episodes see The Doctor and his new companion battle monsters on distant alien planets.

When Captain Colter Stevens wakes up in the body of an unknown man, he discovers he's part of an experimental government program called the 'Source Code' that enables him to cross over into another man's identity in the last eight minutes of his life. Armed with the task of identifying the bomber of a Chicago commuter train, Colter must relive the incident over and over again, gathering clues until he can solve the mystery and prevent an even deadlier...

Casper, a charming but underprepared Time Traveler, is trapped in the past. He befriends Holly, a jaded drifter, who helps him exploit his trivial knowledge of the future for a series of quick payouts. When a more competent Time Traveler tracks them down, Casper and Holly are forced to figure out what they mean to each other and whether the future they've threatened is even worth saving.

"A romantic comedy about a family traveling to the French capital for business. The party includes a young engaged couple forced to confront the illusion that a life different from their own is better"--IMDB.com.

Eve of the Daleks: New Year's Eve. Sarah is working, again. Nick is her only customer, again. Same old same old. Except this year, their countdown to midnight will be the strangest and deadliest they've ever known. Why is an Executioner Dalek targeting these two people, in this place, on this night? Can the Doctor, Yaz and Dan save them and survive into the New Year? Legend of the Sea Devil: The Doctor, Yaz and Dan face a familiar foe in Legend of...