View Full Version : Discussion: Hubble Finds Two Small Moons ...

2003-Sep-25, 08:50 PM
SUMMARY: Astronomers using the Hubble Space Telescope have discovered two new moons orbiting Uranus. The newly found moons have been temporarily named S/2003 U 1 and S/2003 U 2 until the International Astronomical Union approves the discovery and gives them something more permanent - they're small, however, only 12 to 16 km across. They're so faint and small they eluded the Voyager 2 spacecraft when it flew by Uranus in 1986. This brings Uranian satellite total up to 24, still behind Jupiter (38) and Saturn (30).

Comments or questions about this story? Feel free to share your thoughts.

2003-Sep-27, 03:52 AM
Question about multiple moons: Is there a reason that the inner planets don't have as many moons as the outer ones. Is it a size thing or a location thing or what? Thanks

2003-Sep-28, 02:17 AM
As I remarked in another posting, Jupiter has I believe 61 moons at last count, not 38.

As for the multiple moons, size matters and is the biggest issue, however, Mars is smaller then Earth and has 2 moons.
But there is speculation that the Martian moons, and many of Jupiter's smaller moons are captured asteroids. Also speculation that planetary rings are moons which were distroyed some time ago.

Neptune's largest moon Triton may be a captured object from the Kupier belt because it has more Pluto like properties then it does of the other Neptunion moons.

2003-Sep-30, 01:00 AM
:) Thank you for your response Planetwatcher!