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![A still of Georges Lemaître smiling and talking and sitting in front of a bookshelf from the rediscovered video.](https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/ga39vZhCAoH9YkwoMpEqha-1200-80.jpg 1200w)
Only filmed interview with Georges Lemaître, 'father of the Big Bang,' rediscovered after 60 years
By Harry Baker published
The only known filmed interview with physicist and Catholic priest Georges Lemaître, who originally proposed the Big Bang theory, has been found on a video that was lost nearly 60 years ago.
![A galaxy with a large reservoir of dark matter (purple overlay) in its center.](https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/GNvowHN8Zqr5CvKV8snyaY-1200-80.jpg 1200w)
The universe is slightly hotter than it should be. 'Dark photons' could be to blame.
By Paul Sutter published
Intergalactic gas clouds are slightly hotter than they should be, new research claims, and theoretical particles called 'dark photons' could explain it.
![Origami Lessons.](https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/qBe8PYTCTbFzZNE9NiWCWH-1200-80.jpg 1200w)
How many times can you fold a piece of paper in half?
By Charles Q. Choi published
It's easy to fold a piece of paper in half once, twice or even three or four times. But what's the highest number of times one piece of paper can be folded in half?
![Does reality exist when we're not looking?](https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/QdsiNvr4caWvLjDmUtTspK-1200-80.jpg 1200w)
Does reality exist when we're not looking?
By Paul Sutter published
In quantum physics, particles exist in many states at once until you measure them. Can reality really work that way?
![Artist concept of the multiverse](https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/ijLpNngmJqgEXdBzCB72dN-1200-80.jpg 1200w)
Do quantum universes really exist?
By Paul Sutter published
In some interpretations of quantum mechanics, such as the Many-Worlds interpretation or the Pilot Wave Theory, parallel universes may form every time a subatomic particle goes through any interaction.
![Concept art of quantum mechanics, theory of superstrings.](https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/tyNoL7R2nku4XxFXVF9HW6-1200-80.jpg 1200w)
Does consciousness explain quantum mechanics?
By Paul Sutter published
A wild theory suggests that consciousness may explain quantum mechanics, by forcing the subatomic particles to choose one concrete outcome.
![The NIF's laser target positioners take aim.](https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/7E7BvBrxMDP5pCvLWugTaW-1200-80.jpg 1200w)
8 times physics blew our minds in 2022
By Ben Turner published
Nuclear fusion, lab-simulated wormholes, and ramming distant asteroids, here are the biggest and best physics stories of the year.
![Abstract image of two waves of light (one pink the other red) colliding together.](https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/RC8x59QKddRWjLvLnAjJ63-1200-80.jpg 1200w)
Is all matter made up of both particles and waves?
By Paul Sutter published
According to quantum mechanics, the physics theory that describes the zoo of subatomic particles, all matter can be described as both particles and waves. But is it real?
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