Recent Entries

NASA –“Moon Yields Clues to Infant Sun & Origin of Life”

 

X Ray Sun

 

We didn’t know what the Sun looked like in its first billion years, and it’s super important because it likely changed how Venus’ atmosphere evolved and how quickly it lost water, said Prabal Saxena, an astrophysicist at NASA’s Goddard Space Flight Center. “It also probably changed how quickly Mars lost its atmosphere, and it changed the atmospheric chemistry of Earth.”

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“Big Bang Vanishes” –Quantum Theory Describes an Eternal Universe

Mrk 1216 Galaxy

 

An intriguing new theory suggests there was no Big Bang singularity, no starting point and points at the possibility that the universe had no beginning.

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“The Great Dying” Sequel –Oxygen Decline in World’s Oceans

The Great Dying

 

The largest extinction in Earth’s history marked the end of the Permian period, some 252 million years ago. Long before dinosaurs, our planet was populated with plants and animals that were mostly obliterated after a series of massive volcanic eruptions in Siberia. Fossils in ancient seafloor rocks show a thriving and diverse marine ecosystem, then a swath of corpses. Some 96 percent of marine species were wiped out during the “Great Dying,” followed by millions of years when life had to multiply and diversify once more.

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Cassini Mission –”Saturn’s Rings May Not Have Existed During Era of T Rex”

 

Saturn's Rings

 

“We see so much more, and closer up, and we’re getting new and more interesting puzzles,” said NASA’s Ames Research Center’s Jeff Cuzzi, who’s been studying Saturn’s rings since the 1970s and is the interdisciplinary scientist for rings on the Cassini mission. “We are just settling into the next phase, which is building new, detailed models of ring evolution—including the new revelation from Cassini data that the rings are much younger than Saturn.”

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Last Week’s Top 5 Space & Science Headlines –“Death of Mars to The First Habitable Planet”

Milky Way Galaxy

 

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China’s “Milky Way Base”/Apollo 11 Anniversary

 

Chang’e-4 lunar probe

 

“Man on the moon,” cried Walter Cronkite to an amazed world fifty years ago this summer. Although cosmologically, a mere blink of the eye, the USA celebrates the anniversary of the Apollo 11 Mission marking Neil Armstrong’s first walk on the moon. Meanwhile, China quietly explores  the mysterious  lunar farside, laying the foundation for the human species’ first moonbase and a radio telescope that will provide an unfettered window on the universe.

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“The Death Star” Event That Ejected Life Into the Solar System

1999 KW4 ESO

 

Some 65 million years ago the greatest asteroid impact in a billion years may have sown life throughout the solar system, even as it ravaged life on Earth. Blasted debris escaped Earth’s gravitational force forming irregular orbits around the sun, eventually finding its way to the planets and moons of the solar system. Mars was eventually dusted with the debris and according to a 2013 study in the journal Astrobiology, the 14-kilometer-wide object ejected tens of thousands of pounds of impact rubble that may have landed on Saturn’s moon, Titan and on Europa and Callisto, which orbit Jupiter – all satellites that scientists believe harbor promising habitats for life. Mathematical models indicate that at least some of this debris still carried living microbes.

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“Something Unknown?” Odd Galaxy May Have Evolved Around a Massive Black Hole

 

 

ESO 495-21

 

A tiny dwarf galaxy, ESO 495-21, three percent the size of the Milky Way, harbors a massive black hole that may offer clues as to how black holes and galaxies evolved in the early Universe. The origin of the central supermassive black holes in galaxies is still a matter of debate — do the galaxies form first and then crush material at their centers into black holes, or do pre-existing black holes gather galaxies around them? Do they evolve together — or could the answer be something else entirely?

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