Search results for auroral arc

Planetary Sciences Sep 11, 2023

Probing rare hot plasma flows in the upper atmosphere

Near Earth's poles, observers of the night sky often behold aurorae, colorful light shows in the upper atmosphere caused by interactions between the solar wind and our planet's magnetosphere. A little closer to the equator, ...

Planetary Sciences Jun 24, 2022

Analysis of citizen scientist's observations in 2015 reveals atmospheric phenomena

A team of researchers from New Zealand, the U.S. and Canada has confirmed the first observation of a SAR arc evolving into a STEVE. In their paper published in the journal Geophysical Research Letters, the group details their ...

Planetary Sciences Jan 4, 2022

Converting auroral observations into 3D structures

A persistent obstacle to a more complete understanding of Earth's auroral activity is characterizing the structure of auroral arcs in 3D. In situ observations, such as spacecraft transits, can directly observe only a narrow ...

Earth Sciences Mar 5, 2021

The story of polar aurora just got much bigger: Unknown magnetospheric mechanisms revealed

A critical ingredient for auroras exists much higher in space than previously thought, according to new research in the journal Scientific Reports. The dazzling light displays in the polar night skies require an electric ...

Space Exploration Aug 31, 2020

NASA selects proposals for new space environment missions

NASA has selected five proposals for concept studies of missions to help improve understanding of the dynamics of the sun and the constantly changing space environment with which it interacts around Earth. The information ...

Space Exploration Oct 16, 2019

Solar storm surveys by ancient Assyrian astronomers

A research team led by the University of Tsukuba combined observations from ancient cuneiform tablets that mention unusual red skies with radioisotope data to identify solar storms that likely occurred around 679 to 655 BCE, ...

Plants & Animals Jun 4, 2019

Bees can link symbols to numbers, study finds

We've learned bees can understand zero and do basic math, and now a new study shows their tiny insect brains may be capable of connecting symbols to numbers.

Earth Sciences Apr 25, 2019

Scientists discover what powers celestial phenomenon STEVE

The celestial phenomenon known as STEVE is likely caused by a combination of heating of charged particles in the atmosphere and energetic electrons like those that power the aurora, according to new research. In a new study, ...

Space Exploration Nov 15, 2018

Auroras unlock the physics of energetic processes in space

A close study of auroras has revealed new ways of understanding the physics of explosive energy releases in space, according to new UCL-led research.

Space Exploration Feb 14, 2018

Scientists directly observe electron dynamics of the Northern Lights

The shower of electrons bouncing across Earth's magnetosphere, commonly known as the Northern Lights, has been directly observed for the first time by an international team of scientists. While the cause of these colorful ...

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