Time

Which time travel movie got the rules right? According to experiments using a quantum time travel simulator, reality is “self-healing,” so changes made to the past won’t drastically alter the future you came from – at least, in the quantum realm.

NASA has confirmed that a miniaturized, ultra-precise mercury-ion atomic clock currently in low-Earth orbit has been switched on.

The subjective sense that time moves faster as we get older is a universal one, and over the years​ scientists have proffered a number of different explanations as to why this happens. A new and strange hypothesis attempts to explain the phenomena, and it has to do with our aging brains.

In recent tests run by the National Institute of Standards and Technology (NIST), experimental atomic clocks have achieved record performance in three metrics, meaning these clocks could help measure the Earth’s gravity more precisely or detect elusive dark matter.

Renowned physicist Stephen Hawking, who passed away in March, is set to be interred in Westminster Abbey in June. In a final show of the man’s wit and dedication to the weirder realms of physics, it seems that time travelers are on the guest list.

At the heart of an atomic clock are, as the name suggests, atoms of a specific type. Now, physicists at the National University of Singapore (NUS) have found that lutetium atoms could make for more stable atomic clocks.

A time crystal sounds like a sci-fi concept, but they’re very real, and as new research reveals, you might have some in your home already. Scientists at Yale University have now spotted the signature of a time crystal in a common crystal that crops up in off-the-shelf crystal-growing kits for kids.

Renowned physicist Stephen Hawking passed away earlier this year, but his legacy to science will live on. His final theory on the origin of the universe has now been published, and it offers an interesting departure from earlier ideas about the nature of the “multiverse.”

Swiss watchmaker IWC is celebrating its 150th anniversary by releasing three limited-edition mechanical digital wristwatches with jumping numerals. They're a modern take on the first commercially marketed digital watches that IWC produced beginning in 1884.

In quantum physics particles can tunnel through barriers that they shouldn’t normally be able to. While this process, called quantum tunneling, is well documented, physicists haven’t been able to tell if it happens instantly or takes time, but now a team from the Max Planck Institute has an answer.

​A new phase of matter, called a time crystal, has been created for the first time. In a regular crystal, the atoms are arranged in a pattern that repeats in space, but in a time crystal, that pattern repeats through time. The creation of time crystals marks a new class of non-equilibrium phases.

​To say that the world has changed since 1984 is an understatement, but it's hard to visualize. Now Google has released Timelapse, cramming 32 years of human progress/destruction into 10 second bites. From exploding cities to vanishing glaciers, let’s take a quick tour around the globe.