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Category: alien life – Page 102

Study reveals new details on what happened in the first microsecond of Big Bang

Researchers from University of Copenhagen have investigated what happened to a specific kind of plasma—the first matter ever to be present—during the first microsecond of Big Bang. Their findings provide a piece of the puzzle to the evolution of the universe, as we know it today.

About 14 billion years ago, our changed from being a lot hotter and denser to expanding radically—a process that scientists have named the Big Bang.

And even though we know that this fast expansion created particles, atoms, stars, galaxies and life as we know it today, the details of how it all happened are still unknown.

Kate Adamala (U of M) 1: Synthetic Cells: Building Life to Understand It

www.iBiology.org.

Dr. Kate Adamala describes what synthetic cells are and how they can teach us the fundamental principles of life.

Life on Earth evolved once — this means that all biological systems on our planet are rooted in the same fundamental framework. This framework is extremely complex and we have yet to fully understand the processes inside each living cell. One way of understanding complex systems is to break them down into simpler parts. This is the principle of engineering the synthetic cell: to use our current knowledge of biology for building a living cell with the least amount of parts and complexity. Synthetic cells can be used to teach us about the basic principles of life and evolution, and they hold promise for a range of applications including biomaterials and drug development. Dr. Kate Adamala narrates an introduction to this exciting field.

0:00 Introduction.
2:22 How do we build a synthetic cell?
7:12 How can we use synthetic cells?

Speaker Biography:
Dr. Kate Adamala is a synthetic biologist and a McKnight Land-Grant Assistant Professor in the Department of Genetics, Cell Biology and Development at the University of Minnesota. Her research interests include astrobiology, synthetic cell engineering and biocomputing. Adamala is a co-founder and steering group member of the international Build-a-Cell Initiative, which seeks to broaden the impact of synthetic cell engineering. Find more information on Adamala’s lab at:
http://www.protobiology.org.

Credits:

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A rare glimpse of a star before it went supernova defies expectations

A rare glimpse of a star before it exploded in a fiery supernova looks nothing like astronomers expected, a new study suggests.

Images from the Hubble Space Telescope reveal that a relatively cool, puffy star ended its life in a hydrogen-free supernova. Until now, supernovas without hydrogen were thought to originate only from extremely hot, compact stars.

The discovery “is a very important test case for stellar evolution,” says Sung-Chul Yoon, an astrophysicist at Seoul National University in South Korea, who was not involved in the work. Theorists have some ideas about how massive stars behave right before they blow up, but such hefty stars are scant in the local universe and many are nowhere near ready to go supernova, Yoon says. Retroactively identifying the star responsible for a supernova provides an opportunity to test scenarios of how stars evolve right before exploding.

China rocket debris likely plunged into the Indian Ocean near the Maldives, says China’s space agency

Debris from an out-of-control Chinese rocket likely plunged into the Indian Ocean, just west of the Maldives, on Saturday night ET, China’s space agency said.

Most of the huge Long March 5B rocket, however, burned up on reentering the atmosphere, the China Manned Space Engineering Office said in a post on WeChat.

It was unclear if any debris had landed on the atoll nation.

Scientists Claim to Spot Fungus Growing on Mars in NASA Rover Photos

The team went so far as to say that “black fungi-bacteria-like specimens also appeared atop the rovers.”

They didn’t stop there: the team also examined photos taken by NASA’s HiRISE, and found evidence for “amorphous specimens within a crevice” that “changed shape and location then disappeared.”

“It is well established that a variety of terrestrial organisms survive Mars-like conditions,” the team concludes. “Given the likelihood Earth has been seeding Mars with life and life has been repeatedly transferred between worlds, it would be surprising if there was no life on Mars.”

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