Alien life in our Solar System? Study hints at Saturn’s moon

Enceladus, one of Saturn's many moons. (NASA/AFP)
Updated 27 February 2018
0

Alien life in our Solar System? Study hints at Saturn’s moon

PARIS: Humanity may need look no further than our own Solar System in the search for alien life, researchers probing one of Saturn’s moons said Tuesday.
The icy orb known as Enceladus may boast ideal living conditions for single-celled microorganisms known as archaeans found in some of the most extreme environments on Earth, they reported in the science journal Nature Communications.
A methanogenic (methane-producing) archaean called Methanothermococcus okinawensis thrived in laboratory conditions mimicking those thought to exist on Saturn’s satellite, the team said.
On Earth, this type of archaean is found at very hot temperatures near deep-sea hydrothermal vents, and converts carbon dioxide and hydrogen gas into methane.
Traces of methane were previously detected in vapor emanating from cracks in Enceladus’ surface.
“We conclude that some of the CH4 (methane) detected in the plume of Enceladus might, in principle, be produced by methanogens,” the researchers in Germany and Austria wrote.
They also calculated that sufficient hydrogen to support such microbes could be produced by geochemical processes in Enceladus’ rocky core.
The authors had set out to test the hypothesis that conditions on the satellite may be good for hosting methanogenic archaea.
The data, based purely on laboratory study, showed this “could be” so, said Simon Rittmann of the University of Vienna who co-authored the scientific paper.
But the results provide “no evidence for possible extraterrestrial life,” he underlined to AFP.
“Our study only concerns microorganisms. I would like to avoid any speculation about intelligent life,” he said.
Saturn is the sixth planet from the Sun, separated from Earth only by Mars and Jupiter.
It has dozens of moons.
Previous research suggested that Enceladus sports an ocean of liquid water — a key ingredient for life — beneath its icy surface.
The moon is also thought to contain compounds such as methane, carbon dioxide, and ammonia, and its south pole sports hydrothermal activity — a combination of traits that makes it a key target in the search for extra-terrestrial life.
Further research is needed to exclude the possibility that Enceladus’ methane may come from non-biological, geochemical processes, the authors said.


SpaceX’s first private passenger is Japanese fashion magnate Maezawa

This artist's illustration courtesy of SpaceX obtained September 17, 2018, shows the SpaceX BFR(Big Falcon Rocket)rocket passenger spacecraft. SpaceX is to reveal on September 17, 2018 the identity of the first person it plans to transport around the Moon in an ambitious project financed entirely by its eccentric CEO Elon Musk. (AFP)
Updated 18 September 2018
0

SpaceX’s first private passenger is Japanese fashion magnate Maezawa

  • SpaceX in February transfixed a global audience with the successful test launch of its Falcon Heavy, the most powerful operational rocket in the world
  • SpaceX has already upended the space industry with its relatively low-cost reusable Falcon 9 rockets

HAWTHORNE, California: SpaceX, Elon Musk’s space transportation company, on Monday named its first private passenger as Japanese businessman Yusaku Maezawa, the founder and chief executive of online fashion retailer Zozo.
A former drummer in a punk band, billionaire Maezawa will will take a trip around the moon aboard its forthcoming Big Falcon Rocket spaceship, taking the race to commercialize space travel to new heights.
The first passenger to travel to the moon since the United States’ Apollo missions ended in 1972, Maezawa’s identity was revealed at an event Monday evening at the company’s headquarters and rocket factory in the Los Angeles suburb of Hawthorne.
In moves typical of his publicity-seeking style, Musk, who is also the billionaire chief executive of electric car maker Tesla Inc, had previously teased a few tantalizing details about the trip and the passenger’s identity, but left major questions unanswered.
On Thursday, Musk tweeted a picture of a Japanese flag. He followed that up on Sunday with tweets showing new artist renderings of the Big Falcon Rocket, or BFR, the super heavy-lift launch vehicle that Musk promises will shuttle the passenger to the moon and eventually fly humans and cargo to Mars, using the hashtag #OccupyMars.
While the BFR has not been built yet, Musk has said he wants the rocket to be ready for an unpiloted trip to Mars in 2022, with a crewed flight in 2024, though his ambitious production targets have been known to slip.
SpaceX plans a lunar orbit mission. It was not clear how much Maezawa paid for the trip.
Maezawa made his fortune by founding the wildly popular shopping site Zozotown. His company Zozo, officially called Start Today Co. Ltd, also offers a made-to-measure service using a polka dot bodysuit, the Zozosuit..
With SpaceX, Amazon.com founder Jeff Bezos’ Blue Origin and entrepreneur Richard Branson’s Virgin Galactic battling it out to launch private-sector spacecraft, the SpaceX passenger will join a growing list of celebrities and the ultra-rich who have secured seats on flights offered on the under-development vessels.
Those who have signed up to fly on Virgin Galactic sub-orbital missions include actor Leonardo DiCaprio and pop star Justin Bieber. A 90-minute flight costs $250,000.
Short sightseeing trips to space aboard Blue Origin’s New Shepard rocket are likely to cost around $200,000 to $300,000, at least to start, Reuters reported in July.
SpaceX has already upended the space industry with its relatively low-cost reusable Falcon 9 rockets. The company has completed more than 50 successful Falcon launches and snagged billions of dollars’ worth of contracts, including deals with NASA and the US Department of Defense.
SpaceX in February transfixed a global audience with the successful test launch of its Falcon Heavy, the most powerful operational rocket in the world.
SpaceX previously announced plans to eventually use Falcon Heavy to launch paying space tourists on a trip around the moon, but Musk said in February he was inclined to reserve that mission for the BFR.