The Kuiper belt is a region of the
Solar System beyond the planets extending from the
orbit of
Neptune (at 30
AU) to approximately 50
AU from the
Sun. It is similar to the
asteroid belt, although it is far larger—20 times as wide and 20 to 200 times as massive. It consists mainly of
small bodies, or remnants from the Solar System's formation. While the asteroid belt is composed primarily of
rock, ices, and metal, the Kuiper objects are composed largely of frozen
volatiles, such as
methane,
ammonia and water. The classical (low-eccentricity) belt is home to at least three
dwarf planets:
Pluto,
Haumea, and
Makemake. Some of the Solar System's
moons, such as
Neptune's
Triton and Saturn's
Phoebe, are also believed to have originated in the region. Since the belt was discovered in 1992, the number of known Kuiper belt objects has increased to over a thousand, and more than 70,000 KBOs over 100 km (62 mi) in diameter are believed to exist. Pluto is the largest known member of the Kuiper belt, if the
scattered disc is excluded. In Pluto's honour, the four currently accepted dwarf planets beyond Neptune's orbit are called "
plutoids".
2001 – Members of the
Islamist separatist group
Abu Sayyafkidnapped 20 tourists in
Palawan, Philippines, triggering a hostage crisis that lasted over twelve months.
A Century of Progress International Exposition was a
world's fair held in
Chicago from 1933 to 1934 to celebrate the city's centennial. The theme of the fair was technological innovation. Its motto was "Science Finds, Industry Applies, Man Adapts" and its architectural symbol was the
Sky Ride, a
transporter bridge perpendicular to the shore on which one could ride from one side of the fair to the other. Originally, the fair was scheduled only to run until November 12, 1933, but it was so successful that it was opened again to run from May 26 to October 31, 1934. Much of the fair site is now home to
Northerly Island park and
McCormick Place.
This Wikipedia is written in
English. Started in 2001 (2001), it currently contains
3,963,585 articles. Many other Wikipedias are available; some of the largest are listed below.
The Kuiper belt is a region of the
Solar System beyond the planets extending from the
orbit of
Neptune (at 30
AU) to approximately 50
AU from the
Sun. It is similar to the
asteroid belt, although it is far larger—20 times as wide and 20 to 200 times as massive. It consists mainly of
small bodies, or remnants from the Solar System's formation. While the asteroid belt is composed primarily of
rock, ices, and metal, the Kuiper objects are composed largely of frozen
volatiles, such as
methane,
ammonia and water. The classical (low-eccentricity) belt is home to at least three
dwarf planets:
Pluto,
Haumea, and
Makemake. Some of the Solar System's
moons, such as
Neptune's
Triton and Saturn's
Phoebe, are also believed to have originated in the region. Since the belt was discovered in 1992, the number of known Kuiper belt objects has increased to over a thousand, and more than 70,000 KBOs over 100 km (62 mi) in diameter are believed to exist. Pluto is the largest known member of the Kuiper belt, if the
scattered disc is excluded. In Pluto's honour, the four currently accepted dwarf planets beyond Neptune's orbit are called "
plutoids".
2001 – Members of the
Islamist separatist group
Abu Sayyafkidnapped 20 tourists in
Palawan, Philippines, triggering a hostage crisis that lasted over twelve months.
A Century of Progress International Exposition was a
world's fair held in
Chicago from 1933 to 1934 to celebrate the city's centennial. The theme of the fair was technological innovation. Its motto was "Science Finds, Industry Applies, Man Adapts" and its architectural symbol was the
Sky Ride, a
transporter bridge perpendicular to the shore on which one could ride from one side of the fair to the other. Originally, the fair was scheduled only to run until November 12, 1933, but it was so successful that it was opened again to run from May 26 to October 31, 1934. Much of the fair site is now home to
Northerly Island park and
McCormick Place.
This Wikipedia is written in
English. Started in 2001 (2001), it currently contains
3,963,585 articles. Many other Wikipedias are available; some of the largest are listed below.