Today at around 13:00 UTC, the Jupiter system will be in opposition, when the planet and its attendant moons are on the opposite side of the...

Happy Thursday everyone! Only one more day till Friday...  Just thought I would post a few quick notes: Jupiter and the Moon are particula...

This week we are looking back at the discovery of Io and the other Galilean satellites by Galileo Galilei 400 years ago yesterday.  Yesterda...

This week we are looking back at the discovery of Io and the other Galilean satellites by Galileo Galilei 400 years ago today.  Yesterday , ...

This week we are looking back at the discovery of Io and the other Galilean satellites by Galileo Galilei 400 years ago tomorrow.  Yesterday...

This week we are looking back at the discovery of Io and the other Galilean satellites by Galileo Galilei 400 years ago this Thursday.  Yest...

This week we are looking back at the discovery of Io and the other Galilean satellites by Galileo Galilei 400 years ago this Thursday.  In p...

Later this morning, Io's trailing hemisphere will experience a total solar eclipse when Ganymede passes between Io and the Sun. The ecl...

The impact of a small asteroid or comet into Jupiter's atmosphere, first observed by astronomer Anthony Wesley (let's be honest, any...

15 years ago, the world watched as broken-apart comet Shoemaker-Levy 9 impacted Jupiter's atmosphere in a series of event in July 1994. ...

Tomorrow brings Io's most interesting eclipse this mutual event season as most of Io's trailing hemisphere (51° West-231° West) is p...

Grrr... I hate when Mondays sneak up on you... The 111th Edition of the Carnival of Space is now online over at 21st Century Waves . Ove...

Here are two videos showing today's total eclipses of the Sun by Callisto on Io's south polar region: Computer Animation of the f...

Tomorrow (June 16), Io will experience three solar eclipses by its larger neighbor, Ganymede. Like those that took place last week , these...

I completely forgot in my last post that there are TWO total solar eclipse by Ganymede tomorrow, in addition to the one around 08:50 UTC. ...

With the Jupiter system approaching vernal equinox on June 22, eclipses of the Sun on Io by the other satellites in the Jupiter system and o...

My podcast for the 365 Days of Astronomy should be online later today, if it isn't already. The topic of my podcast is "It's ...

With this being the International Year of Astronomy, I thought this would be a good time to do a post on Astronomy on Io. Obviously, there ...