Tag: "meteorites" at biology news
Meteorites supplied Earth life with phosphorus
...lution of life on Earth. Their research shows that meteorites
easily could have provided more phosphorus than na... professor of planetary sciences, on the idea that meteorites
are the source of living Earth's phosphorus. The work was inspired by Lauretta's earlier experiments...
Life in the universe takes orders from space
... due to the chemical contribution of the countless meteorites
that struck the planet during its early history. T...and specific chemistry of life. Pizzarello studies meteorites
and the chemicals housed within them. A particular type of meteorite - carbonaceous chondrites - hol...
Extraterrestrial enigma: missing amino acids in meteorites
...cids have been found in interstellar clouds and in meteorites
but with some enigmatic omissions and tantalizing...on Earth. Just why some amino acids are present in meteorites
and others are absent, and why they seem to prefer the same "left-handed" molecular structure as Ear...
Scientists confirm age of the oldest meteorite collision on Earth
...e dynamics of the Earth's crust." Evolution and meteorites
The impact of these major catastrophes on the evolution of early life is difficult to determine, Lowe observed. "The most advanced organisms at the time were bacteria, so there isn't a big extinction event you can identify as cut-and-dry as the ...
Chemistry of life in outer space is topic of two-day symposium, April 4-5
... researchers are investigating the likelihood that meteorites
and dust from comets and asteroids brought water, ...uary 2000, is one of the rarest and most primitive meteorites
ever examined by researchers. (The paper on this research, GEOC 148, will be presented at 3:20 p.m.,...
Hitchhiking molecules could have survived fiery comet collisions with Earth, UC Berkeley experiment shows
...eventy varieties of amino acids have been found in meteorites
- many the suspected cores of comets that smashed to earth - and are presumed to exist in interstellar dust clouds. Not only did a good fraction of the amino acids survive the simulated comet collision, but many polymerized into chains of two, three...
Geologists explore beach nourishment controversies, groundwater quality, and Blue Ridge mountain issues
...ly conflicting nature of rocks on Mars and Martian meteorites
found on Earth and the idea that Mars has and is h...rs' rocks comes from laboratory studies of Martian meteorites
and analyses of rocks on the planet's surface. (It will be some time before we can actually bring ro...
NSF official describes hunt for antarctic meteorites related to new meteorite evidence of primitive life on Mars
...y of Sciences that meteorite ALH84001, one of the meteorites
retrieved from Antarctica, may contain remnants of... scientists have been able to obtain material from meteorites
that have fallen to earth from the moon and from Mars as well as elsewhere in the solar system. The ...
Stowaways from space provide link between impact, biggest extinction in Earth history
...f helium and argon molecules are characteristic of meteorites
and comets and must have been formed in space. ...th papers showed that it's possible for comets and meteorites
to deliver organic compounds to Earth, adding credence to the theory that early life on Earth was so...
Science's Top 10: genome sequencing named top scientific advance of 2000
..., are the long-sought suppliers of the most common meteorites
arriving on Earth. For decades astronomers have been unable to find the source of the so-called "ordinary chondrite" meteorites, bits of the unaltered building blocks of the solar system. But Eros's elemental composition, measured as NEAR Shoemaker c...
Analysis of Martian meteorite using unique magnetic microscope
...rument to gain important new information about the meteorites
thermal history, information that could provide va...e popular theory that, over geologic time, Martian meteorites
may have carried microbial life from Mars to Earth. The subsequent collaboration between Kirschv...
Life from the skies
...in substances such as iron and nickel derived from meteorites
burning up in the atmosphere. "Aerosols in the stratosphere can last up to a year," says Murphy. "They have lots of time to pick up different things." As the water in the droplets evaporates, the diverse substances within them become concentrated. T...
Microbes on Earth may be key to identifying life on other planets
Evidence of life in Martian meteorites
or future rock samples from the Red Planet may be easier to identify thanks to microbes living in hot springs at Yellowstone National Park. "The existence of life itself can change the physical and chemical attributes in an environment of deposition,...
Chemical 'crumbs' from microbes' snacks provide a trail to ancient, remote life
...in, then hopes to use those methods to study other meteorites
that may hold signs of life. "Understanding biological fingerprinting is a little like deciphering an ancient treasure map," says Anbar, whose work is supported by the NASA Astrobiology Institute and the National Science Foundation. "We do our best ...
The Shape Of Life: How Does The Computer "Know" When It Sees It?
...of human hair," Noeverexplained. From the 12 known meteorites
believed to have made their way to Earthfrom Mars,...uture searchscenarios, including theexamination of meteorites
found on Earth and lunar or interplanetary samplesretrieved from new space missions. A lab assistan...
ASU Scientists Join NASA Astrobiology Institute
... investigate the organic chemistry of carbonaceous meteorites
andinterplanetary dust particles. (This work will ...e Collection, the largest university collection of meteorites
in the world. Statement from ASU Interim Vice Provost ...
Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...e ice sheets; and an expedition to search for more meteorites
on the continent that yielded ALH84001, the now-famous meteorite from Mars that may contain fossil life. The National Science Foundation (NSF) is supporting approximately 145 Antarctic investigations, based mainly out of three research statio...