Wormholes

Misha Glenny and guests discuss a turning point in world affairs in 1898 that left Spain greatly reduced as an imperial power and the US the owner of the Philippines, Guam and Puerto Rico, with a significant influence over the newly independent Cuba where the war broke out. The U ...  Show more

Misha Glenny and guests discuss the physics, biology and chemistry of the element silicon which is at the heart of some of the most useful and beautiful objects on the planet. While it is still being created throughout the universe, the silicon we have here was made billions of y ...  Show more

Melvyn Bragg and guests discuss the tantalising idea that there are shortcuts between distant galaxies, somewhere out there in the universe. The idea emerged in the context of Einstein's theories and the challenge has been not so much to prove their unlikely existence as to show ...  Show more

Black holes are one of the most beguiling objects in our universe. What are they exactly? How do they affect the universe? And what would it be like to fall into one? We venture beyond the point of no return with Yale astrophysicist Priyamvada Natarajan, into a fascinating world ...  Show more

Have black holes existed since the beginning of the Universe? Could we produce a black hole in the lab? Could we use gravitational waves to probe beyond the event horizon? It's a black hole Q&A as Izzie put your questions to Becky and Robert. Plus, author and broadcaster, Marcus ...  Show more

Nothing escapes a black hole … or does it? In the 1970s, the physicist Stephen Hawking described a subtle process by which black holes can “evaporate,” with some particles evading gravitational oblivion. That phenomenon, now dubbed Hawking radiation, seems at odds with general ...