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Last year, Dr. Sergio Canavero created quite the ruckus (to put it mildly) when he vowed to be the primary person to transplant a person’s head onto a deceased donor’s body. Yes, he’s planning on attempting the world’s first caput transplant (or body transplant, betting on how you study it).

In fact, it’s been a few years since his initial proclamation, and therefore the Italian neurosurgeon still stands firm on his declaration, despite claims from other experts that it’s nothing but a PR Stunt (at best) or a hoax. Some have even hypothesized it’s all just a plot meant to push Metal Gear Solid.

Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule.

That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 20 zeroes and a 1.

Previously, researchers had dipped into the realm of zeptoseconds; in 2016, researchers reporting in the journal Nature Physics used lasers to measure time in increments down to 850 zeptoseconds.

Refueling in orbit is a crucial step for SpaceX to allow its Starship spacecraft to make the journey to faraway places, including the Moon and Mars. The idea is to launch multiple Starships, some destined to top up others while in orbit.

“Combining Starship’s rapid reusability with orbital refilling is critical to economically transporting large numbers of crew and cargo to the Moon and Mars,” SpaceX wrote in a tweet celebrating the news.

NASA is contracting SpaceX to demonstrate the transfer of ten metric tons of liquid oxygen propellant between one Starship and another, a collaboration with NASA’s Glenn Research Center and the Marshall Space Flight Center.

Keeping Calm

Over the last four years, the brightness of the other stars fluctuated wildly, whereas the Sun stayed relatively constant, according to research published Friday in the journal Science. In fact, the difference between the Sun’s brightest and dimmest moments is a fifth the size of other stars.

“We wanted to see if the Sun is somehow different,” Max Planck Institute researcher Timo Reinhold told Inverse. “People have claimed that it’s more quiet than other stars, while others have claimed that it’s similarly active so we wanted to really boil it down to this very solar-like sample that is very similar to the Sun.”

It looks like micro-plastics are now found inside human bodies.


Researchers found evidence of plastic contamination in tissue samples taken from the lungs, liver, spleen and kidneys of donated human cadavers.

“We have detected these chemicals of plastics in every single organ that we have investigated,” said senior researcher Rolf Halden, director of the Arizona State University (ASU) Biodesign Center for Environmental Health Engineering.

There’s long been concern that the chemicals in plastics could have a wide range of health effects ranging from diabetes and obesity to sexual dysfunction and infertility.