Category Astronomy/Space

Methane-Eating ‘Borgs’ have been Assimilating Earth’s Microbes

Conceptual painting depicting celestial purple orbs of varying sizes connected with stretching strands.
A digital illustration inspired by methane-eating archaea and the Borgs that assimilate them (Credit: Jenny Nuss/Berkeley Lab)

A newly discovered type of transferrable DNA structure with a sci-fi name appears to play a role in balancing atmospheric methane. In Star Trek, the Borg are a ruthless, hive-minded collective that assimilate other beings with the intent of taking over the galaxy. Here on nonfictional planet Earth, Borgs are DNA packages that could help humans fight climate change.

Last year, a team led by Jill Banfield discovered DNA structures within a methane-consuming microbe called Methanoperedens that appear to supercharge the organism’s metabolic rate. They named the genetic elements “Borgs” because the DNA within them contains genes assimilated from many organisms...

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The Most Precise Accounting Yet of Dark Energy and Dark Matter

Credit: NASA/CXC/U.Texas

Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find themselves at a crossroads.

Pantheon+ convincingly finds that the cosmos is composed of about two-thirds darkenergy and one-third matter — mostly in the form of dark matter — and is expanding at an accelerating pace over the last several billion years. However, Pantheon+ also cements a major disagreement over the pace of that expansion that has yet to be solved.

By putting prevailing modern cosmological theories, known as the Standard Model of Cosmology, on even firmer evidentiary and statistical footing, Pantheon+ further closes the door on alternative fram...

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Scientists Compile Cassini’s Unique Observations of Saturn’s Rings

Compilation of Saturn and its rings against black space
SwRI scientists have compiled 41 solar occultation observations of Saturn’s rings, encompassing data from NASA’s Cassini mission over the course of nearly 20 years. The compilation will aid future investigations of the particle size distribution and composition in Saturn’s rings, key factors in understanding their formation and evolution. Courtesy of NASA/JPL-Caltech/SSI/Cornell 

Compilation will inform future investigations into the formation, evolution of ring system. Southwest Research Institute scientists have compiled 41 solar occultation observations of Saturn’s rings from the Cassini mission...

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New Tool allows Scientists to Peer inside Neutron Stars

NASA/Goddard Space Flight Center
NASA/Goddard Space Flight Center

Imagine taking a star twice the mass of the sun and crushing it to the size of Manhattan. The result would be a neutron star—one of the densest objects found anywhere in the universe, exceeding the density of any material found naturally on Earth by a factor of tens of trillions. Neutron stars are extraordinary astrophysical objects in their own right, but their extreme densities might also allow them to function as laboratories for studying fundamental questions of nuclear physics, under conditions that could never be reproduced on Earth.

Because of these exotic conditions, scientists still do not understand what exactly neutron stars themselves are made from, their so-called “equation of state” (EoS)...

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