Opposition occurs when Earth is completely aligned between the sun and another planet. June 10 is also when Jupiter is at its closest approach to Earth of the year.
The gas giant will be one of the brightest objects in the night sky during that time period. Peering through a telescope, you'll be able to see the planet's Great Red Spot, cloud bands and possibly even its largest moons.
MORE SPACE: Jupiter, the Milky Way and other things to see in the sky in June 2019