Two scientists propose an explanation for the bizarre ridge belting Saturn's moon Iapetus at the equator. At one time Iapetus itself may have had a satellite, created by a giant impact with ...

The second Saturnian moon ever discovered -- Iapetus -- was immediately caught doing something no other moon had ever done: it was only visible for half of its orbit. The other 50% of the time ...

From Iapetus, Saturn appears the same size as Earth as seen from our Moon. Unfortunately, Iapetus’ odd huge orbit makes it hard for the Cassini spacecraft to reach it.

Astronomers believe it is possible for a moon to have its own moon — or even rings. Saturn’s walnut-shaped moon Iapetus may be evidence of exactly such an occurrence.

In 1671, the famed astronomer Giovanni Cassini was observing Saturn when he found a new, faint moon orbiting it along its western side. As he attempted to follow its orbit, however, he found ...

More than 60 moons are known to orbit Saturn, but few of them are as visually striking as Iapetus. ... Iapetus is sometimes referred to as the “painted,” or “yin-yang” moon, ...

Iapetus: Moon of mystery ... Something must have hit the moon - most likely another moon - and ejected it into its present orbit. "However, that is an unlikely event," says Freire.

Two scientists propose an explanation for the bizarre ridge belting Saturn's moon Iapetus at the equator. At one time Iapetus itself may have had a satellite, created by a giant impact with ...

And there’s no consensus as to how a mysterious large ridge that covers more than 75 percent of the moon’s equator was formed. It’s been a tough nut to crack.

For centuries, people wondered how the leopard got its spots. The consensus is pretty solid that evolution played a major role. But it’s only been five years since the arrival of high-resolut… ...