TechnologyBlobs in Space: Slime mold to blast off for...

Blobs in Space: Slime mold to blast off for ISS experiment

-

Paris, France: Astronauts aboard the International Space Station are set to welcome a most unusual guest, as “the Blob” blasts off into orbit on Tuesday.

An alien on its own planet, the Blob is an unclassifiable organism — neither fish nor fowl. Nor is it plant, animal or fungus.

As such, Physarum polycephalum — a type of slime mold — has long fascinated scientists and will now be part of a unique experiment carried out simultaneously by astronauts hundreds of kilometers above the Earth and by hundreds of thousands of French school students.

Image
Scientists at NASA prepare Blobi Wan Kenobi to take off for the International Space Station. Image courtesy of NASA via Twitter.

The slime mold first appeared on Earth around 500 million years ago and defies conventional biology because it is made up of one cell with multiple nuclei.

While most organisms grow and reproduce through the division and multiplication of cells, Physarum polycephalum does not.

“It is a single cell that grows without ever dividing,” explains Pierre Ferrand, professor of Earth sciences and life seconded to French space agency CNES, one of the people behind the project.

Another oddity: “When most organisms make do with two sex types, the Blob has more than 720. It is an organism ‘with drawers’ which tells us that life consists of multitude originalities,” he says.

What one’s cell can do

A yellowish, spongy mass, the slime mold lacks a mouth, legs, or brain.

Yet despite these apparent disadvantages, the mold eats, grows, moves — albeit very slowly — and has amazing learning abilities.

Because the Blob’s DNA floats freely around inside its cell walls — rather than being contained inside a nucleus — it can “slough off” parts of itself at will.

It can also enter a dormant state by dehydrating — called “sclerotia”.

And it is several pieces of sclerotia that will embark on their odyssey aboard an ISS refueling freighter.

When rehydrated in September, four sclerotia — each about the size of the average pinky fingernail — will be roused from their torpor in their Petri-dish beds.

Brett Cole Photography | Yellow slime mold (Physarum polycephalum) in  Jedidiah Smith State Park, California Coast Redwoods photo
An alien on its own planet, the Blob is an unclassifiable organism — neither fish nor fowl. Nor is it plant, animal or fungus. The slime mold looks like a yellowish, spongy mass, and lacks a mouth, legs, or brain. Image courtesy of Brett Cole Photography.

The samples — both shorn from the same “parent Blob cell” (labeled by scientists as LU352)– will undergo two protocols: one will deprive certain sub-Blobs of food; the others will be able to gorge out on a food source — porridge oats.

The goal is to observe the effects of weightlessness on this organism — but as an educational experience, a giant school experiment that reaches into space. There are no scientific papers expected as part of the mission’s design.

“Nobody knows what its behavior will be in a microgravity environment: what direction will it move in? Will it take the third dimension by going upwards, or go sideways?” asks Ferrand.

“I’ll be curious to see if it develops by forming pillars,” says Blob specialist Audrey Dussutour, director for the Centre for Research on Animal Cognition in Toulouse.

Meanwhile, back on Earth, thousands of specimens cut from the same LU352 strain will be distributed to about 4,500 schools and colleges in France.

“More than 350,000 students will ‘touch’ the Blob,” says Christine Correcher, who runs the space agency’s educational program.

At the end of this month, teachers will receive kits containing three to five sclerotia.

When the sections of the Blob are revived in space, their cohorts will also be rehydrated on Earth.

Observations will then begin to compare the differences in how the samples in space adapt compared with those on Earth — which may cast light on fundamental questions surrounding the basic building blocks of life.

AFP
AFP is a leading global news agency for comprehensive, verified coverage of events shaping the world.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest news

Swiss unanimously votes for same-sex union referendum

GENEVA — In Switzerland, a controversial same-sex marriage referendum has been resoundingly approved by voters of the conservative, rich Alpine...

New Covid surge overwhelms hospitals in parts of US

WASHINGTON, D.C. — According to one of the country's top health officials, the spike in coronavirus cases in the...

China wants effeminate male celebs to man up

WASHINGTON — Macho men are in and effeminate male performers are out as Beijing expands its crackdown on China's entertainment...

Billie Eilish, BTS to perform at climate change concert

Billie Eilish, BTS, and Elton John, among others, will donate their star power to Global Citizen Live on Saturday...

Google faces off EU in court over record $5.1 billion antitrust fine

This week, Google will face the European Commission in a five-day court hearing, appealing a record $5.1 billion fine...

WHO’s Covax misses 2021 target. What went wrong?

The latest supply forecast for Covax – the programme for sharing COVID-19 vaccines around the world – suggests that accelerating vaccination...

Must read

You might also likeRELATED
Recommended to you