Category Astronomy/Space

Strange Dismembered Star Cluster found at Galaxy’s Edge

Artist's impression of the Phoenix stream of stars. Credit: James Josephides, Swinburne Astronomy,
Artist’s impression of the thin stream of stars torn from the Phoenix globular cluster, wrapping around the Milky Way (left). Astronomers targeted bright red giant stars (artist’s impression, right) to measure the chemical composition of the disrupted Phoenix globular cluster. Credit: James Josephides, Swinburne Astronomy

An international team of astronomers has discovered the remnant of an ancient collection of stars that was torn apart by our own galaxy, the Milky Way, more than two billion years ago.

The extraordinary discovery of this shredded ‘globular cluster’ is surprising, as the stars in this galactic archaeological find have much lower quantities of heavier elements than in other such clusters...

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How Stony-Iron Meteorites form

View into the SAPHiR multi-anvil press at the FRM II.
View into the SAPHiR multi-anvil press at the FRM II.Image: W. Schürmann / TUM

SAPHiR multi-anvil press solves mystery of the solar system. Meteorites give us insight into the early development of the solar system. Using the SAPHiR instrument at the Research Neutron Source Heinz Maier-Leibnitz (FRM II) at the Technical University of Munich (TUM), a scientific team has for the first time simulated the formation of a class of stony-iron meteorites, so-called pallasites, on a purely experimental basis.

“Pallasites are the optically most beautiful and unusual meteorites,” says Dr. Nicolas Walte, the first author of the study, in an enthusiastic voice. They belong to the group of stony-iron meteorites and comprise green olivine crystals embedded in nickel and iron...

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Astrophysicist investigates the possibility of Life below the surface of Mars

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Although no life has been detected on the Martian surface, a new study from astrophysicist and research scientist at the Center for Space Science at NYU Abu Dhabi, Dimitra Atri finds that conditions below the surface could potentially support it. The subsurface – which is less harsh and has traces of water – has never been explored. According to Atri, the steady bombardment of penetrating Galactic Cosmic Rays (GCRs) might provide the energy needed to catalyze organic activity there.

Atri’s findings are reported in the study Investigating the biological potential of galactic cosmic ray-induced radiation-driven chemical disequilibrium in the Martian subsurface environment in the journal Scientific Reports, Springer Nature.

There is growing evidence suggesting the presence of an aq...

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Unprecedented look into ‘Central Engine’ powering a Solar Flare

Researchers provide an unprecedented look inside the “central engine” of a large solar flare, a site were dramatic bursts of energy are released, and particles are accelerated to relativistic energies. (Photo: NJIT-CSTR, B. Chen, S. Yu; NASA SDO)

In a study published in Nature Astronomy, an international team of researchers has presented a new, detailed look inside the “central engine” of a large solar flare accompanied by a powerful eruption first captured on Sept. 10, 2017 by the Owens Valley Solar Array (EOVSA) — a solar radio telescope facility operated by New Jersey Institute of Technology’s (NJIT) Center for Solar-Terrestrial Research (CSTR).

The new findings, based on EOVSA’s observations of the event at microwave wavelengths, offer the first measurements characterizing t...

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