Bruce McCandless, who made first untethered space flight, dies at 80

Bruce McCandless, who was captured in a stunning photograph in 1984 as he made the first untethered flight in space, has died aged 80, Nasa said.

With a jetpack, McCandless travelled 100m (328ft) from the Space Shuttle , according to BBC.

"That may have been one small step for Neil, but it's a heck of a big leap for me," he joked, adapting astronaut Neil Armstrong's famous moon-landing line.

Armstrong's words were in fact relayed to McCandless, who was in mission control for the moon landing in 1969.

Mars: Not as dry as it seems

When searching for life, scientists first look for an element key to sustaining it: fresh water.

Although today's Martian surface is barren, frozen and uninhabitable, a trail of evidence points to a once warmer, wetter planet, where water flowed freely. The conundrum of what happened to this water is long standing and unsolved, according to Science Daily.

Scientists, propose that the Martian surface reacted with the water and then absorbed it, increasing the rocks oxidation in the process, making the planet uninhabitable.

New approach for detecting planets in the Alpha Centauri system

 Astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there, according to Science Daily.

According to a study led by Professor Debra Fischer and graduate student Lily Zhao, there may be small, Earth-like planets in Alpha Centauri that have been overlooked. Meanwhile, the study ruled out the existence of a number of larger planets in the system that had popped up in previous models.

Do YOU hate cilantro? Scientists say the answer could be in your DNA

When it comes to cilantro, conversations often tend to get heated – you either love it or hate it.

The controversial herb has sparked many a debate at the dinner table, and according to a new video, the reason may be in your DNA, according to Daily Mail.

Scientists have found that a slight variation in a chromosome linked to your sense of smell may cause some people to perceive the flavour of cilantro as predominantly ‘soapy.’

The new video explores the so-called ‘cilantroversy’ in which people have become so divided on the herb.

Cilantro leaves are a common garnish on all sorts of dishes, from tacos to noodles, and the seeds, known as coriander, are a staple among the spices.

But, some people simply cannot stand the taste.

The oldest plesiosaur was a strong swimmer

Plesiosaurs were especially effective swimmer. These long extinct "paddle saurians" propelled themselves through the World's oceans by employing "underwater flight" -- similar to sea turtles and penguins. Paleontologist, now describe the oldest plesiosaur, together with colleagues. The find comes from the youngest part of the Triassic period and is about 201 million years old, according to Science Daily.

Instead of laboriously pushing the water out of the way with their paddles, plesiosaurs were gliding elegantly along with limbs modified to underwater wings. Their small head was placed on a long, streamlined neck. The stout body contained strong muscles keeping those wings in motion. Compared to the other marine reptiles, the tail was short because it was only used for steering. This evolutionary design was very successful, but curiously it did not evolve again after the extinction of the plesiosaurs" says paleontologist Prof. Martin Sander.