Research

rapid magnetic field changes f

New study shows Earth's magnetic field can change 10x faster than currently believed

A new study published in Nature Communications shows that previous changes in the direction of Earth's magnetic field reached rates that are up to 10 times larger than the fastest currently reported variations of up to one degree per year. The authors combined...

July 06, 2020

disappearing star july 2 2020 2

ESO telescope catches the disappearance of massive unstable star

Astronomers have discovered the absence of a massive unstable star in the Kinman Dwarf galaxy using ESO's Very Large Telescope (VLT). One explanation offered is the end of a luminous blue variable (LBV) eruption of a surviving star, with a mild drop in...

July 04, 2020

volcanic eruption june 27 2020_002

Massive eruption at Alaska's Okmok volcano in 43 B.C.E. linked with cold weather, widespread famine, strange sighting in the sky and the fall of Roman Republic

A new study suggests that the massive Okmok volcano eruption in Alaska in 43 B.C.E. may have caused a nearly two-decade power struggle that led to the fall of the Roman Republic and the rise of the Roman Empire. According to records, the period was marked with...

June 28, 2020

lesser antilles june 27 2020 2

Study reveals how water in the deep Earth triggers seismic events

In a new study, an international team of scientists provided the first conclusive evidence directly correlating deep Earth's water cycles, magmatic productivity, and earthquake activity. Water and other volatiles that are cycled through the deep Earth have...

June 28, 2020

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Motions in the Sun unveil inner workings of sunspot cycles

The Sun's magnetic activity fluctuates in a rhythm of about 11 years, which is reflected in the frequency of sunspots. During solar maximum, huge sunspots and active regions appear on the surface of the star. Scientists have long been puzzled over the reason...

June 28, 2020

volcanic eruption june 27 2020

Massive volcanic eruption in Japan as the cause of severe famine in Europe in 1108

The eruption in Japan's Asamayama volcano in the year 1108 may have led to an extreme weather event that triggered severe famine in Europe, new research revealed. The study is based in part on the research team's analysis of ice cores extracted from glaciers...

June 28, 2020

solar flare nasa june 16 2020

Scientists develop new automatic method for detecting traces of Sun's coronal mass ejections

Scientists at the Skolkovo Institute of Science and Technology in Russia along with colleagues from the Karl-Franzens University of Graz and the Kanzelhoehe Observatory, Austria have formulated a new automatic method for tracking coronal dimmings or traces of...

June 21, 2020

3d image of geological process beneath earth june 19 2020 2

Scientists create 3D images of geological processes below Earth's surface

Geoscientists at the University of Texas at Dallas generated high-resolution, 3D images of the dynamic geological processes that are happening far below the Earth's surface. The team described in the study how they created images of mantle flows in a subduction...

June 21, 2020

green glow on mars june 19 2020 3

Unusual green glow detected for the first time in atmosphere of Mars

The European Space AGency's (ESA) Trace Gas Orbiter (TGO) has detected an unusual green glow for the first time in the atmosphere of Mars. According to the new study, the bright emission has been predicted to exist at Mars for around 40 years. "One of the...

June 21, 2020

cahuilla earthquake swarm june 19 2020

Underground fluid injections triggered earthquake swarm near Cahuilla, California

A new seismological study found that a naturally-occurring injection of underground fluids triggered an earthquake swarm near Cahuilla, California, that lasted for nearly four years. The research shows an evolving understanding of how fault architecture drives...

June 21, 2020

Wudalianchi volcanic field china june 17 2020 2

Magma recharging beneath the Weishan volcano of the intraplate Wudalianchi volcanic field, China

A team of geophysicists warned that Wei Mountain in northeast China could be "recharging" for an eruption after two huge magma chambers were discovered under the volcano, which last erupted more than half a million years ago. The researchers said they...

June 17, 2020

air filters measuring radioactive cloud over europe june 16 2020 2

Radioactive Ruthenium-106 over Europe originated from civilian nuclear activities, study finds

Researchers at the Leibniz University Hannover LUH) and the University of Münster (WWU) found out that the mysterious cloud containing radioactive Ruthenium-106, which moved across Europe in 2017, did not come from military sources, but rather originated from...

June 16, 2020

artist impression of exoplanet and star june 12 2020 ft img

Astronomers spot potentially habitable planet and star closely resembling Earth and Sun

Astronomers have discovered a potentially habitable exoplanet and its star-- both with striking similarities to the Earth and our Sun. The exoplanet candidate called KOI-456.04, which is about 1.9 times the size of ours, is at the right distance from its star, which...

June 14, 2020

1snowball earth june 12 2020 2

Sand wedges in glacier deposits indicate large seasonal cycle during Marinoan snowball Earth

In the Earth's equatorial regions today, the seasonal cycle of the monthly mean surface air temperature is less than 10 °C (50 °F). However, deep sand wedges discovered near the paleo equator in the Marinoan glaciogenic deposits at 635 million years ago,...

June 14, 2020

xray pulsar artist concept june 11 2020 2

Ultra-bright X-ray source awakens after 26 years in a galaxy not-so-far away

A new ultra-bright X-ray source has awakened after 26 years near our galactic neighbors the Magellanic Clouds. This is the second-closest ultra-bright X-ray source to date, with brightness more powerful than a million suns. The object, called RX J0209.6-7427, was...

June 14, 2020

supermassive black holes june 3 2020

Huge simulation suggests new origin of supermassive black holes

Astrophysicists at Tohoku University in Japan have suggested a new theory for the origin of supermassive black holes using large computer simulations. The theory helps to further explain the massive number of black holes currently observed. Nearly every galaxy in...

June 14, 2020

volcano june 12 2020

Classic hypothesis revived... decline of oxidizable volcanic gases as the trigger for Great Oxidation Event

It's commonly believed that oxygen first accumulated in the atmosphere about 2.4 billion years ago, when the Great Oxidation Event happened. Geologic clues indicate that early bacteria were pumping out oxygen hundreds of millions of years before then, but...

June 13, 2020