Category: Jupiter

Although New Horizons’ main target is Pluto and the Kuiper Belt, it’ll have plenty of opportunities to do some science along the way. Next up, Jupiter. The spacecraft is now just a few weeks away from its closest approach to the gas giant, where it’ll capture some images but also receive a much needed speed boost.
Continue reading “New Horizons Bearing Down on Jupiter”

Jupiter’s newly formed Red Spot Jr. is increasing in strength, according to new observations from the Hubble Space Telescope. These latest measurements clock its windspeeds at 640 kph (400 mph); almost double the speeds recorded by the Voyager spacecraft when it observed one of the spot’s parent storms in 1979. The increased windspeed probably dredged up deeper material from the planet, changing its colour from white to red, similar to the Great Red Spot.
Continue reading “Red Spot Jr. is Getting Stronger”

You might have seen better looking pictures of Jupiter before, but that’s not the point. What matters is that this photograph was taken by the Pluto-bound New Horizons spacecraft. It took the picture on September 4, 2006 when it was still 291 million km (181 million miles) away from Jupiter. Don’t worry, the pictures will get much better. It’ll make its closest approach on February 28, 2007, and see the giant planet with 125 times better resolution than this picture.
Continue reading “New Horizons Sets its Sights on Jupiter”

Astronomers from UC Berkeley used the massive W.M. Keck Observatory in Hawaii to capture this infrared image of Jupiter and its two massive storms: the Great Red Spot and the smaller Oval BA. The image was taken on July 20, using the telescope’s adaptive optics system to sharpen the image. Scientists still aren’t sure why the spots have turned red, but they think it might be that they dredge darker material up from deeper in the planet’s atmosphere; when exposed to ultraviolet light from the Sun, this material turns red.
Continue reading “Jupiter’s Great Red Spots”

Astronomers have been predicting the meetup for months; Jupiter’s Great Red Spot and its newly formed “Red Spot Jr.” were bound to have a close encounter. This high-resolution photo from the Gemini Observatory shows how they looked July 13, 2006. Although both are red in visible light, they look white because the image was captured in the near-infrared wavelength, which can reveal more details. Astronomers don’t think anything dramatic is going to happen as the storms slip past each other this time around.
Continue reading “Red Spots Brush Past Each Other”