Could time travel ever be science fact? Time itself may be something you can bend and stretch. Trying to understand if time travel can be possible teach us a lot about the universe. It forces us to take on some of the toughest unanswered questions in all of physics and will ultimately probably lead to deeper understanding of the very nature of the cosmos.

Using cutting-edge research, a dedicated team of archaeologists has compiled the evidence to fill in a 400-year gap in man's knowledge of the bluestones of Stonehenge. By combining innovative 3D scanning techniques, traditional field archaeology and novel laboratory analysis, the team has discovered where the stones were quarried and where they first stood.
Professor Alice Roberts shows how the team made its discoveries and joins Professor Mike Parker Pearson to piece together the final parts of the puzzle, solving one of the toughest challenges ever faced by archaeologists.

Scientists on the BICEP and Planck missions are attempting to solve a mystery about the earliest moments of our universe, by searching for patterns in the Cosmic Microwave Background (CMB). If successful, the missions will help to answer the biggest question anyone can ask: how did our universe begin?

D-Day: As It Happens D-Day: As It Happens tells the story of this pivotal event in 20th-century history in a completely new way. Using newly-analysed archive footage, viewers can track the progress of seven people who were there on the day, each of them a real participant in the 1944 invasion. And they can do so moment by moment in real time, encountering the twists and turns of the fighting at the same time as the D-Day seven did, and learning their fate as the action unfolds in parallel with the present, Narrated by Peter Snow, with Channel 4 presenter and former marine Arthur Williams, and experts including former British Army officer Colonel Tim Collins and front-line journalist Lorna Ward. The first programme tells the back stories of the real people that the event is following in real time and sets out their missions over the following 24 hours. The D-Day seven include a paratrooper, a midget submariner, a nurse and a military cameraman.

Whitney Houston broke more music industry records than any other female singer in history. With over 200 million album sales worldwide, she was the only artist to chart seven consecutive U.S. No. 1 singles. She also starred in several blockbuster movies before her brilliant career gave way to erratic behavior, scandals and death at age 48.
The documentary is an intimate, unflinching portrait of Houston and her family that probes beyond familiar tabloid headlines and sheds new light on the spellbinding trajectory of Houston's life. Using never-before-seen archival footage, exclusive demo recordings, rare performances, audio archives and original interviews with the people who knew her best, filmmaker Kevin Macdonald unravels the mystery behind 'The Voice,' who thrilled millions even as she struggled to make peace with her own troubled past.

The Earth was formed by a series of cosmic cataclysms including the most powerful blast in the Universe. Yet amid the turmoil our world was born. Could the same chain of events have created other earths elsewhere, inhabited by creatures like us?