NASA’s James Webb Space Telescope has revealed a previously unknown moon orbiting Uranus, bringing the planet’s total to 29. The discovery, announced by a team led by the Southwest Research Institute (SwRI), adds a small but important piece to the picture of Uranus’ dynamic system.

Scientists think the new tiny moon hid for so long -- even eluding the Voyager 2 spacecraft during its flyby about 40 years ago — because of its small size.

Over millions of years, Uranus’s inner moons may have collided and spread out into rings. As the material in the rings diffused, they moved farther away from the planet. Eventually, that material can start to accumulate, recycling itself back into a moon.

Astronomers using NASA's James Webb Space Telescope (JWST) have discovered a newfound moon orbiting icy Uranus, the seventh planet from the sun.

According to new information on SkySafari 6 Pro, a program used to predict the placement of stars and planets, Thursday, Aug. 21, is the last chance for people to see the planetary parade, which includes the crescent moon.