Recent Entries

Planet Earth Report –“Anthropocene Not an Epoch to Greenland as the Future”

 

Earth from the ISS

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

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“Interstellar” –Extraterrestrial Particles Unveiled in Antarctica

Local Interstellar Cloud

 

“It must have been a supernova, not so near as to kill us but not too far to be diluted in space,” said physicist Dominik Koll, at Australian National University, about the new discovery that our planet probably picked up stray particles not naturally produced on Earth while traveling through the Local Interstellar Cloud (image above), also known as the Local Fluff, for somewhere between 40,000 and 150,000 years and will probably not emerge for another 20,000 years.

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NASA Adheres to “Attempt No Landing There”–Greenlights Europa Flybys

Europa Clipper Antenna

 

“It may be that our role on this planet is not to worship God – but to create him, wrote Arthur C Clarke, author of 2001 A Space Odyssey. Clarke also famously warned against a mission to explore the most intriguing of Jupiter’s 79 moons, which has now been given the green light to proceed to the final stages of development of NASA’s Europa Clipper Mission.

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Quantum World of Black Holes –“Contorting the Fabric of Spacetime”

EHT Image of M87 Black Hole

 

Recently, the world was transfixed when the first ever image of a black hole shown above was released by the Event Horizon Telescope. Or, to be more precise, the pictures showed the bright circle, called an Einstein ring, made by the light that just barely escaped the grasp of the black hole’s immense gravity. This ring of light was due to fact that, according the theory of general relativity, the fabric of spacetime itself becomes so contorted by the mass of the black hole that it acts like a huge lens.

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Mars at Age One Billion –“Rainstorms & Huge Flowing Rivers”

Jezero Crater River

 

“We know there were periods when the surface of Mars was frozen; we know there were periods when water flowed freely,” said Briony Horgan with Purdue University at the at the Goldschmidt Geochemistry Conference in Barcelona. “But we don’t know exactly when these periods were, and how long they lasted. We have never sent unmanned missions to areas of Mars which can show us these earliest rocks, so we need to use Earth-bound science to understand the geochemistry of what may have happened there.

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Planet Earth Report –“Bitcoin Terrorists to Pacific-Sized Asteroid Impact”

Earth from ISS

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

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“Ultraviolet Hell” –NASA’s Search for Life on a Rocky M Dwarf Planet

NASA M Dwarf Planet

 

I’m hopeful that other planets around M dwarfs could keep their atmospheres, says Laura Kreidberg, a researcher at the Harvard and Smithsonian Center for Astrophysics, about a new study using data from NASA’s Spitzer Space Telescope provides a rare glimpse of conditions on the surface of a rocky planet, LHS 3844b, located 48.6 light-years from Earth. “The terrestrial planets in our solar system are enormously diverse, and I expect the same will be true for exoplanet systems.”

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“Unknown Dark Energy”– A Fifth Force or New Form of Matter?

Whirlpool Galaxy Dark Energy

 

An experiment to test a popular theory that dark energy –the unknown force that is causing the universe to expand at an accelerating rate– is a ‘fifth’ force that acts on matter has found no evidence of its existence. “The discovery of dark energy has greatly changed how we think about the laws of nature,” said Edward Witten,  one of the world’s leading theoretical physicist at the Institute for Advanced Study in Princeton, N.J. who has been compared to Newton and Einstein.

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