What would happen if nuclear reactors all over the planet exploded at once? | What If

40 years ago this morning, the unthinkable happened: the Space Shuttle Challenger exploded 73 seconds after liftoff, killing all 7 astronauts on board, including Christa McAuliffe, who was supposed to be the first teacher in space. School children watched in horror as the tragedy happened. This is original coverage from the Eyewitness News vault. | ABC7NY

A closer look at... Cornelia Parker's Cold Dark Matter: An Exploded View 1991 💥🏚 Driven by curiosity, British artist Cornelia Parker reconfigures domestic objects to question our relationship with the world us. For this artwork, Parker suspends the remaining contents of an exploded garden shed: 'I operate very often in these frozen moments where there's been lots of action, but this is a sort of quiet corner of that. It’s not an explosion, it’s quiet contemplation.’ Book now to see more of Par

A truck transporting liquid gas in Chile's capital Santiago has overturned and exploded. #9News | 9 News Queensland

On January 28th, 1986 the Space Shuttle Challenger exploded and broke apart on take off. This week, Destruction Decoded explores the top 10 most dramatic space accidents, from Baikonur to Cape Canaveral. Watch Destruction Decoded on Wednesdays at 8pm, on National Geographic UK. | National Geographic UK

Video obtained by sister station WLKY shows the moment a UPS plane exploded and burst into flames on a runway at Louisville's airport. The latest: http://www.wpbf.com/article/plane-crash-explosion-louisville-airport/69255286 WARNING: Viewer discretion advised. | WPBF 25 News