Technology & Science

Cassini sends back 1st images from new orbit around Saturn

From its new orbit, NASA's Cassini spacecraft has returned stunning close-up images of Saturn and a raging storm at its north pole.

Spacecraft set to return unprecedented photos of planet's ring system and small moons

This view shows part of the giant, hexagon-shaped jet stream around Saturn's north pole on Dec. 3, 2016, at a distance of about 390,000 kilometres from Saturn. (NASA/JPL-Caltech/Space Science Institute)

NASA's Cassini spacecraft has sent back stunning close-up images of Saturn from its new orbit.

The spacecraft, which has been at Saturn since 2004, recently entered a new ring-grazing orbit around the planet.

While in its new territory, Cassini will study the rings — which extend up to 282,000 kilometres from the planet and range in size from small grains to a few as big as mountains — in unprecedented detail. 

The new images of Saturn's northern hemisphere were taken on Dec. 2-3, just before the spacecraft was set to buzz past the rings. Cassini will pass the outer rings on Dec. 11 and continue to do so until April 22. 

Featured prominently in the new images is the planet's hexagonal polar storm, believed to be caused by a jet stream in its upper atmosphere. 

This collage of images from NASA's Cassini spacecraft shows Saturn's northern hemisphere and rings as viewed with four different spectral filters. Each filter is sensitive to different wavelengths of light and reveals clouds and hazes at different altitudes. (NASA/JPL-Caltech/Space Science Institute)

Eventually, Cassini's orbit will take it past Titan, Saturn's largest moon. Then the spacecraft will begin what is being dubbed the "Grand Finale," when it will travel 22 times between the planet and its innermost ring until April 26.

Finally, on Sept. 15, it will plunge into Saturn. As it does so, it will transmit valuable data back to Earth about the planet's atmosphere.

The death dive into the planet is to ensure that it doesn't crash into moons such as Enceladus or Titan, which could potentially harbour microbial life.

"This is it, the beginning of the end of our historic exploration of Saturn," Carolyn Porco, Cassini imaging team lead at Space Science Institute, said in a statement. "Let these images — and those to come — remind you that we've lived a bold and daring adventure around the solar system's most magnificent planet." 

In 2010, Cassini was given an extension to its original 2004 mission. That Solstice Mission allowed scientists to study seasonal changes on the planet. It also provided a new "pale blue dot" image of Earth taken from orbit.

In this rare image taken on July 19, 2013, the wide-angle camera on NASA's Cassini spacecraft has captured Saturn's rings and our planet Earth and its moon in the same frame. (NASA/JPL-Caltech/Space Science Institute)

About the Author

Nicole Mortillaro

Senior Reporter, Science

Nicole has an avid interest in all things science. As an amateur astronomer, Nicole can be found looking up at the night sky appreciating the marvels of our universe. She is the editor of the Journal of the Royal Astronomical Society of Canada and the author of several books.