Posted by Emily Lakdawalla on 2010/08/24 11:36 CDT
Following up on the story I first posted on August 22, the Jupiter impact fireball first noticed by Japanese amateur astronomer Masayuki Tachikawa has been independently confirmed by two other Japanese astronomers.
Posted by Emily Lakdawalla on 2010/08/22 05:03 CDT
This may be a very common event after all: another optical flash has been observed on Jupiter, again from an observer far east of the Greenwich meridian, though it was not Anthony Wesley (for once).
Posted by Emily Lakdawalla on 2010/06/16 05:07 CDT
When I wrote a post about Jupiter's missing South Equatorial Belt in May, I had three main questions: how long did it take for the belt to go away, has this happened before, and how can a planet as big as Jupiter change its appearance so quickly?
The impact flash on Jupiter observed earlier today by Anthony Wesley has been confirmed by Philippines-based amateur astronomer Christopher Go.
Posted by Emily Lakdawalla on 2010/06/03 05:51 CDT
On the same day as a team of astronomers released new Hubble Space Telescope images of last year's Jupiter impact, the original discoverer of the 2009 impact scar, Anthony Wesley, reported on an amateur astronomy forum that he had observed a new impact on Jupiter.
Posted by Emily Lakdawalla on 2010/05/10 05:22 CDT
Via Daniel Fischer's Tweet about a blog entry by Astro BobI learned of something which should be obvious to anyone who has trained even a rather small telescope on Jupiter over the past few weeks: one of its iconic stripes is just plain gone.
Posted by Emily Lakdawalla on 2009/12/07 03:11 CST
Jupiter has been high overhead at sunset for several months, a brilliant light that's easy to spot even when the sky is still bright at dusk; but it's now moving quickly to the west as Earth speeds ahead of Jupiter's more stately march around the Sun.
Posted by Emily Lakdawalla on 2009/12/07 10:43 CST
Galileo, the scientist, discovered the Galilean satellites of Jupiter four hundred years ago next month, while Galileo, the mission, arrived at Jupiter to study those moons in situ fourteen years ago Sunday.
Posted by Emily Lakdawalla on 2009/11/12 04:45 CST
Via the USGS I learned that Jupiter has passed a milestone of sorts, and now has fifty named satellites.
Posted by Emily Lakdawalla on 2009/11/04 04:02 CST
On Planetary Radio's "Questions and Answers" I answered this question: "I read that Uranus got its tilt when it was hit by another object. What does it mean for a ball of gas to be hit -- wouldn't another object just pass through it?"
Posted by Emily Lakdawalla on 2008/04/07 01:27 CDT
As New Horizons continues its journey (it's now approaching the orbital distance of Saturn, though it's very far from that planet in space), the mission is taking advantage of the recent experience with the Jupiter flyby to plan out the science operations for the Pluto-Charon encounter.
Posted by Emily Lakdawalla on 2007/01/31 07:00 CST
A year after its launch on January 19, 2006, New Horizons is fast closing in on Jupiter, the first target on its near decade-long journey. On February 28 the spacecraft will approach to within 2.3 million kilometers (1.4 million miles) of Jupiter before speeding along on to its way to the edge of the solar system.