How long is a Saturn day? Scientists finally know

Study on the planet's icy rings reveals a single day is just over 10-and-a-half hours long

After decades of uncertainty, scientists have finally figured out the length of a day on Saturn, according to Daily Mail.

Saturn’s peculiar magnetic field and landmark-free surface have long stood in the way of scientists’ ability to determine its rotation rate.

But, thanks to Cassini data, they’ve now solved the mystery.

Vibrations picked up by particles in the planet’s rings have provided a window into the movement of Saturn’s interior for the first time, revealing a day on the icy planet lasts just 10 hours, 33 minutes and 38 seconds.

The human brain works backwards to retrieve memories! We get a general overview when recalling an event before reconstructing details

Humans retrieve the memory of an event in reverse to how they saw it, a report has discovered.

Instead of constructing a past memory by building a picture from details of the event, the brain forms an overall 'gist' of what happened first, according to Daily Mail.

It then fills out the story by retrieving more detail.

This process seems to be the opposite of how the brain works when first encountering an event.

Thousands of stars turning into crystals

The first direct evidence of white dwarf stars solidifying into crystals has been discovered by astronomers at the University of Warwick, and our skies are filled with them, according to Science Daily.

Observations have revealed that dead remnants of stars like our Sun, called white dwarfs, have a core of solid oxygen and carbon due to a phase transition during their lifecycle similar to water turning into ice but at much higher temperatures. This could make them potentially billions of years older than previously thought.

The GEMSTONE planet: Researchers reveal 'shimmering' super-Earth 21 light years away that could be covered in sapphires and rubies

Researchers have discovered a unique 'shimmering' planet they say could be a new class of exoplanet.

Officially known as HD219134 b. it is 21 light years away from us in the constellation Cassiopeia, according to Daily Mail.

Astronomers say unlike Earth, it most likely does not have a massive core of iron, but is rich in calcium and aluminium which makes it incredibly rich in gemstones

'Perhaps it shimmers red to blue like rubies and sapphires, because these gemstones are aluminium oxides which are common on the exoplanet,' says Caroline Dorn, astrophysicist at the Institute for Computational Science of the University of Zurich who led the new study.

Getting a glimpse inside the moon

New research from University of Alberta physicists provides the first-ever model of our Moon's rotational dynamics, taking into consideration its solid inner core. Their model helps to explain why, as seen from Earth, the Moon appears to wobble on its axis, according to Science Daily.

The answer, said physicist Mathieu Dumberry, lies in the complex geometry of the Moon's orbit, locked in what is known as a Cassini state.

"The Moon goes around the Earth, but its orbit is inclined by about five degrees. But just like the Earth's rotation axis is inclined by 23.5 degrees in space, the Moon's rotation axis is also inclined, by about 1.5 degrees," explained Dumberry, associate professor in the Department of Physics. "Over one orbit, it points at the same direction in space -- which is in the same plane as the normal to the orbit of the moon. This defines a Cassini state."

This type of lunar orbit was first observed by Giovanni Cassini more than four centuries ago. Since that time, the complex mathematical and physical elements of the Cassini state have been examined by scientists around the world. But what makes this model unique is accounting for a solid inner core at the centre of the Moon.