US scientists say they have uncovered new clues in the ongoing mystery of the Jovian Trojans -- asteroids that orbit the sun on the same path as Jupiter. The asteroids are unusual in that they travel in packs, with one group leading the way along the orbit in front of the gas giant planet, with a second group trailing behind. Data from NASA's Wide-field Infrared Survey Explorer has revealed details of the Trojans' colors, important clues to their composition and origin, NASA's Jet Propulsion Laboratory in Pasadena, Calif., reported Monday. The findings suggest the Trojans do not resemble the asteroids from the main belt between Mars and Jupiter, nor the Kuiper belt family of objects from the icier, outer regions near Pluto, astronomers said. "Jupiter and Saturn are in calm, stable orbits today, but in their past, they rumbled around and disrupted any asteroids that were in orbit with these planets," said Tommy Grav, a WISE scientist from the Planetary Science Institute in Tucson. "Later, Jupiter recaptured the Trojan asteroids, but we don't know where they came from. Our results suggest they may have been captured locally. "If so, that's exciting because it means these asteroids could be made of primordial material from this particular part of the solar system, something we don't know much about." Other planets have been found to have Trojan asteroids riding along with them in their orbits, including Mars, Neptune and even Earth, where WISE recently found the first known Earth Trojan.
GMT 13:29 2018 Monday ,01 January
Serbia launches probe after toxic waste dumped near BelgradeGMT 19:03 2017 Thursday ,28 December
Pregnant elephant 'poisoned' in Indonesian palm plantationGMT 16:26 2017 Sunday ,24 December
Nepal's two last known dancing bears rescued: officialsGMT 10:51 2017 Sunday ,24 December
Florida orange industry hit by hurricane, diseaseGMT 09:09 2017 Sunday ,24 December
Modern-day amber 'Klondikes' thrive in troubled UkraineGMT 19:23 2017 Saturday ,23 December
Indonesian pangolin faces extinction due to traffickingGMT 11:37 2017 Friday ,22 December
Global warming may boost asylum-seekers in Europe: studyGMT 07:32 2017 Friday ,22 December
Modern-day Mowgli: Indian toddler forges bond with monkeys
Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2025 ©
Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2025 ©
Send your comments
Your comment as a visitor