Category Astronomy/Space

Meteorite-loving Microorganism

Meteorite dust fragments colonized and bioprocessed by M. sedula (© Tetyana Milojevic).

Archaeon can crunch meteorite and feed on it. Chemolithotrophic microorganisms derive their energy from inorganic sources. Research into the physiological processes of these organisms – which are grown on meteorite – provides new insights into the potential of extraterrestrial materials as a source of accessible nutrients and energy for microorganisms of the early Earth. Meteorites may have delivered a variety of essential compounds facilitating the evolution of life, as we know it on Earth.

An international team around astrobiologist Tetyana Milojevic from the University of Vienna explored the physiology and metal-microbial interface of the extreme metallophilic archaeon Metallosphaera sedula...

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Hidden Giant Planet revealed around Tiny White Dwarf Star

Artist’s impression of the giant planet and white dwarf. Credit: University of Warwick/Mark Garlick

The first evidence of a giant planet orbiting a dead white dwarf star has been found in the form of a disc of gas formed from its evaporating atmosphere.

The Neptune-like planet orbits a star a quarter of its size about once every ten days, leaving a comet-like tail of gas comprised of hydrogen, oxygen and sulphur in its wake.

The discovery by astronomers from the University of Warwick’s Department of Physics and the Millennium Nucleus for Planet Formation (NPF) at the University of Valparaíso is published today (4 December) in the journal Nature...

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Saturn’s largest moon, Titan, may offer insights for Earth

Titan Cassini
Researchers used data collected from the Cassini mission between 2004 and 2017 to learn more about climate on Titan, Saturn’s largest moon. Photo illustration: NASA/Cassini/Kevin Gill

Researchers report significant seasonal variation in Titan’s energy budget – that is the amount of solar energy absorbed by the celestial body and the thermal energy it emits. The findings, reported in the journal Geophysical Research Letters, could lead to new insights about climate on Earth.

Titan is the only body in the solar system, other than Earth, with a significant atmosphere and liquid surface lakes. “By studying Titan, we can learn a lot about Earth,” said Ellen C...

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Cracking 60-year-old Mystery of Sun’s Magnetic Waves

Image result for "Doppler velocities and spectral energies of observed and simulated time series."
The velocity signatures of the magnetized sunspot atmosphere observed on 14 July 2016.

A Queen’s University Belfast scientist has led an international team to the ground-breaking discovery of why the Sun’s magnetic waves strengthen and grow as they emerge from its surface, which could help to solve the mystery of how the corona of the Sun maintains its multi-million degree temperatures.

For more than 60 years observations of the Sun have shown that as the magnetic waves leave the interior of the Sun they grow in strength but until now there has been no solid observational evidence as to why this was the case.

The corona’s high temperatures have also always been a mystery. Usually the closer we are to a heat source, the warmer we feel...

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