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Star Behaviour

Scientists have discovered a star behaving like no other seen before, giving fresh clues about the origin of a new class of mysterious objects.

Chandra X-ray Observatory about Star Behaviour
Scientists have discovered a star behaving like no other seen before, giving new clues about the origin of a class of mysterious objects. This object, known as ASKAP J1832, shows regular changes in both radio wave and X-ray intensity every 44 minutes, the first time such variations have been seen for a class of objects discovered only three years ago. X-rays from Chandra are shown along with infrared data from the Spitzer Space Telescope, and radio from LOFAR. An inset shows a more detailed view of the immediate area around this unusual object in X-ray and radio light.

Hubble Images Galaxies Near and Far

This NASA/ESA Hubble Space Telescope image features the remote galaxy HerS 020941.1+001557, which appears as a red arc that partially encircles a foreground elliptical galaxy.

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Space image with stars and swirls of colorful orange, red and white.

Earth Information Center

Explore our changing planet

For more than 50 years, NASA satellites have provided data on Earth’s land, water, air, temperature, and climate. NASA’s Earth Information Center allows visitors to see how our planet is changing in six key areas: sea level rise and coastal impacts, health and air quality, wildfires, greenhouse gases, sustainable energy, and agriculture.

Earth Science about Explore our changing planet
The St. Clair River flows into the freshwater Lake St. Clair and separates the American state of Michigan (top) from the Canadian province of Ontario (bottom) in this photograph from the International Space Station as it orbited 260 miles above.
NASA