New Delhi -°C
Today in New Delhi, India

Aug 16, 2019-Friday
-°C

Humidity
-

Wind
-

Select city

Metro cities - Delhi, Mumbai, Chennai, Kolkata

Other cities - Noida, Gurgaon, Bengaluru, Hyderabad, Bhopal , Chandigarh , Dehradun, Indore, Jaipur, Lucknow, Patna, Ranchi

Friday, Aug 16, 2019

Nasa satellite spots stunning view of northern lights

Just hours after the winter solstice, a mass of energetic particles from the Sun smashed into the magnetic field around Earth stirring up a stunning display of northern lights, which was captured by a Nasa satellite.

world Updated: Dec 29, 2016 17:26 IST

PTI, Washington
The northern lights stretched across British Columbia, Alberta, Saskatchewan, Manitoba, Nunavut and Northwest Territories, areas that often fall under the auroral oval.
The northern lights stretched across British Columbia, Alberta, Saskatchewan, Manitoba, Nunavut and Northwest Territories, areas that often fall under the auroral oval.(Photo: Nasa)
         

Just hours after the winter solstice, a mass of energetic particles from the Sun smashed into the magnetic field around Earth stirring up a stunning display of northern lights, which was captured by a Nasa satellite.

With the “day-night band” (DNB) of the Visible Infrared Imaging Radiometer Suite (VIIRS), the Suomi NPP satellite acquired a view of the aurora borealis on December 22.

The northern lights stretched across British Columbia, Alberta, Saskatchewan, Manitoba, Nunavut and Northwest Territories, areas that often fall under the auroral oval.

The DNB detects dim light signals such as auroras, airglow, gas flares, and reflected moonlight.

The sensor detected the visible light emissions as energetic particles rained down from Earth’s magnetosphere and into the gases of the upper atmosphere.

The collision of solar particles and pressure into our planet’s magnetosphere accelerates particles trapped in the space around Earth (such as in the radiation belts).

Those particles are sent crashing down into Earth’s upper atmosphere - at altitudes of 100 to 400 kilometers - where they excite oxygen and nitrogen molecules and release photons of light.

The results are rays, sheets, and curtains of dancing light in the sky.

First Published: Dec 29, 2016 16:11 IST

more from world