The first observations were made of Deimos, the smaller of Mars' two moons.

CNN: Mars' geology 'more like Earth than the moon'

The other two moons, though, yielded the jewels in Galileo's crown of discoveries.

ECONOMIST: Galileo and Jupiter

The probe was built to land on the larger of Mars' two moons, Phobos, and scoop up rock to bring back to Earth.

BBC: Signal picked up from Russia's stranded Mars probe

The discoverers of Pluto's two tiniest moons are inviting the public to help select names for the new moons.

ENGADGET: Pluto moon names to be selected by public voting, we talk to astronomer Mark Showalter

Since being demoted from planet to dwarf planet in 2006 we've actually discovered two new moons orbiting the icy sun satellite.

ENGADGET: Alt-week 7.28.12: social mathematics, Pluto's moons and humans-on-a-chip

Mr. MAX MUTCHLER (Space Telescope Science Institute): About the middle of June, he gave it to me, and within a day, I discovered these two new moons.

NPR: NASA Sends Spacecraft to Pluto

When Dr Koechlin and his team pointed it at Mars they could distinguish that planet's two tiny moons a task which would require a Newtonian telescope with a mirror at least 30cm across.

ECONOMIST: The search for alien life

Belinda and Umbriel, two of Uranus's larger moons, take their names from a poem by Alexander Pope.

ECONOMIST: Today we have naming of parts

The pictures transmitted by the Voyagers showed the two giant planets, and their assorted moons and rings, in unprecedented detail.

ECONOMIST: The long arm of the celestial repairman

Star Trek fans have something to rejoice in: "Vulcan" is the leading contender in a vote to name two of Pluto's recently discovered moons.

BBC: 'Vulcan' leads Pluto moon name vote

Galileo, which has spent the past two years studying Jupiter and its four largest moons, will now concentrate on Europa's icy crust.

CNN: Galileo moves on to Europa