Category Archives: Jupiter
On April 3, 2017, as Jupiter made its nearest approach to Earth in a year, NASA’s Hubble Space Telescope viewed the solar system’s largest planet in all of its up-close glory. At a distance of 415 million miles (668 million km) from Earth, Jupiter offered spectacular views of its colorful, roiling atmosphere, the legendary Great Red Spot, and its smaller companion at farther southern latitudes dubbed “Red Spot Jr.” Taken with Hubble’s Wide Field Camera 3, the image resolves details in Jupiter’s atmosphere as small as about 80 miles (129 km) across.
Read the full article on NASA’s Hubble site here, and check out a version I made with enhanced contrast and sharpness to bring out some details in Jupiter’s clouds below:
On Monday, March 27, at 4:52 a.m. EDT (08:52 UTC) NASA’s Juno spacecraft made its fifth close pass of Jupiter, passing about 2,700 miles (4,400 km) above the planet’s clouds while traveling at a relative speed of 129,000 mph (57.8 kilometers per second). The images above, captured with the JunoCam instrument, show the giant planet’s south pole during this P5 pass.
NASA’s Juno spacecraft will remain in 53-day-long orbits of Jupiter rather than rocket down to smaller 14-day orbits, despite the mission’s original plan to do so. Announced today, Feb. 17, this decision comes after evaluation of issues with helium valves that prevented orbital reduction burns in October and December of 2016.
“During a thorough review, we looked at multiple scenarios that would place Juno in a shorter-period orbit, but there was concern that another main engine burn could result in a less-than-desirable orbit,” said Rick Nybakken, Juno project manager at NASA’s Jet Propulsion Laboratory in Pasadena, California. “The bottom line is a burn represented a risk to completion of Juno’s science objectives.”
Even though Juno will remain in wider orbits its scientific objectives and capability to achieve them shouldn’t be affected—if anything, it will get a chance to explore more of Jupiter’s magnetic environment while reducing the time it spends in some of the more damaging regions of Jupiter’s radiation belts.
The solar-powered Juno spacecraft launched aboard a ULA Atlas V 551 rocket from Cape Canaveral on Aug. 5, 2011. After nearly five years and 1.7 billion miles of travel Juno arrived in orbit at Jupiter on July 4, 2016.
Read the full story here: NASA’s Juno Mission to Remain in Current Orbit at Jupiter
Everyone knows about Jupiter’s famous Great Red Spot, the centuries-old giant anticyclone on Jupiter’s southern hemisphere 2-3 times the size of Earth. But there are many other smaller (but still huge by terrestrial standards!) storms on Jupiter, the largest of which is Oval BA—also known as the “Red Spot Jr.” The image above shows this approximately Earth-sized anticyclone, imaged by NASA’s Juno spacecraft during its 4th “perijove” close pass on Feb. 2, 2017.
I enhanced the original image from Juno’s Junocam instrument to bring out the structure and colors of the swirling clouds in Oval BA. You can see some bright cloud top domes within the center of the storm itself, the result of “boiling” convection cells not unlike what happens in storms on Earth…except on a much larger scale!
The HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter (MRO) is specifically designed to take super high-resolution images of the surface of Mars but it also does a pretty darn good job capturing pictures of other objects too—like Jupiter and its Galilean moons, several hundred million miles away! The image above was captured in expanded color (that is, it includes wavelengths in infrared) by HiRISE on January 11, 2007, and shows the giant planet from Mars orbit.
Mars and Jupiter were at opposition at the time, only about 345 million miles apart.