GRS 2017 Juno

Explore the Night with Bob King

Jupiter's Great Red Spot Just Keeps Getting Smaller

Jupiter's Great Red Spot may be reaching a milestone this year by shrinking to its smallest size in recorded observational history.

Jupiter's Great Red Spot

Space Missions

The Roots of Jupiter’s Great Red Spot Run Deep

NASA’s Juno mission has obtained measurements that finally say just how deep the Great Red Spot goes.

Great Red Spot vs. flake

Solar System

Jupiter's Great Red Spot Gets Smaller — But Stronger

"Flakes" coming off the Great Red Spot have had some wondering if this epic storm is coming to an end. But observations and computer modeling show it's only getting stronger.

Flakey Red Spot

Celestial News & Events

Jupiter Is Outstanding at Opposition

Prime-time Jupiter viewing kicks off this month when the planet reaches opposition on June 10th. 

Celestial News & Events

Jupiter Shines with a Mighty Light

Jupiter's at opposition this week. Close and bright, it shines like a midnight version of Venus. No matter your scope, the biggest planet is always a crowd-pleaser.

Curlicue Madness

Explore the Night with Bob King

Jupiter Close, Bright, and Up All Night

It's easy to like Jupiter. No other planet offers such a bounty of amazing sights through the telescope, especially this week when it reaches opposition.  On April 7th, the largest planet in the solar system will rise at sunset and shine all night. That's the date Jupiter lines up behind…

Solids and Stripes

Explore the Night with Bob King

Jupiter Jumps Back Into The Evening Sky

Jove begins a new apparition with a redder Red Spot, pirouetting moons, and ever-changing cloudscapes.