Hubble cannot look at the Sun directly, so astronomers are planning to point the telescope at Earth's moon, using it as a mirror to capture reflected sunlight and isolate the small fraction of the ...

Hubble will need to be locked onto the same location on the moon for more than seven hours, the transit's duration. For roughly 40 minutes of each 96-minute orbit of Hubble around the Earth, the ...

There will be several chances to see the shadow of Saturn's largest moon, Titan, pass across the ringed planet's Earth-facing ...

The Moon’s lunar surface will turn a reddish color for 15 minutes, and during a “supermoon,” but only for those on the west coast. May 16, 2022: “Total Blood Flower Moon Eclipse” ...

Previous evidence of an ocean on the gigantic moon was "somewhat ambiguous," University of California-Santa Cruz planetary scientist Francis Nimmo, who was not part of the study, says via e-mail.

Hubble did not look at Earth directly. Instead, the astronomers used the Moon as a mirror to reflect sunlight, which had passed through Earth’s atmosphere, and then reflected back towards Hubble.

Using the Hubble Space Telescope an astronomer has detected water vapor in the atmosphere of Jupiter's moon Europa. Astronomers have long suspected that beneath the icy surface of Europa exists a ...

Meanwhile the moon is only about 380,000 km from us—and from Hubble. At that distance, Hubble’s resolution surprisingly limits it to resolving objects no smaller than about 90 meters across.

Then they combed through 150 archived Hubble images of Neptune looking for the moon. Using those Hubble images, they were ...

The moons that orbit Uranus are already known to have unusual characteristics: some are heavily cratered, others have ...