NASA Scientists Discover Fifth Planet Orbiting Nearby Star | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-12.02.24

Airborne-NextGen-12.03.24

Airborne-Unlimited-12.04.24

Airborne Flt Training-12.05.24

Airborne-Unlimited-12.06.24

Sat, Nov 10, 2007

NASA Scientists Discover Fifth Planet Orbiting Nearby Star

55 Cancri Takes Record For Number Of Extrasolar Planets

Astronomers at NASA's Jet Propulsion Laboratory recently announced the discovery of a fifth planet circling 55 Cancri, a star beyond our solar system. The star now holds the record for number of confirmed extrasolar planets orbiting in a planetary system.

55 Cancri is located 41 light-years away in the constellation Cancer and has nearly the same mass and age as our sun. It is easily visible with binoculars. Researchers discovered the fifth planet using the Doppler technique, in which a planet's gravitational tug is detected by the wobble it produces in the parent star. NASA and the National Science Foundation funded the research.

"It is amazing to see our ability to detect extrasolar planets growing," said Alan Stern, associate administrator for the Science Mission Directorate at NASA Headquarters, Washington. "We are finding solar systems with a richness of planets and a variety of planetary types comparable to our own."

The newly discovered planet weighs about 45 times the mass of Earth and may be similar to Saturn in its composition and appearance. The planet is the fourth from 55 Cancri and completes one orbit every 260 days. Its location places the planet in the "habitable zone," a band around the star where the temperature would permit liquid water to pool on solid surfaces. The distance from its star is approximately 116.7 million kilometers (72.5 million miles), slightly closer than Earth to our sun, but it orbits a star that is slightly fainter.

"The gas-giant planets in our solar system all have large moons," said Debra Fischer, an astronomer at San Francisco State University and lead author of a paper that will appear in a future issue of the Astrophysical Journal. "If there is a moon orbiting this new, massive planet, it might have pools of liquid water on a rocky surface."

Fischer and University of California, Berkeley, astronomer Geoff Marcy, plus a team of collaborators discovered this planet after careful observation of 2,000 nearby stars with the Shane telescope at Lick Observatory located on Mt. Hamilton, east of San Jose, CA, and the W.M. Keck Observatory in Mauna Kea, Hawaii. More than 320 velocity measurements were required to disentangle signals from each of the planets.

"This is the first quintuple-planet system," said Fischer. "This system has a dominant gas giant planet in an orbit similar to our Jupiter. Like the planets orbiting our sun, most of these planets reside in nearly circular orbits."

"Discovering these five planets took us 18 years of continuous observations at Lick Observatory, starting before any extrasolar planets were known anywhere in the universe," said Marcy, who contributed to the paper. "But finding five extrasolar planets orbiting a star is only one small step. Earth-like planets are the next destination."

FMI: www.nasa.gov

Advertisement

More News

NTSB Final Report: Michael G Darby DARD 1

After Landing He Realized He Had Misidentified The Runway And Landed In Softer Snow Analysis: The pilot reported that during approach to the snow-covered runway in flat light condi>[...]

ANN's Daily Aero-Term (12.04.24): Arresting System

Arresting System A safety device consisting of two major components, namely, engaging or catching devices and energy absorption devices for the purpose of arresting both tailhook a>[...]

Aero-News: Quote of the Day (12.04.24)

“We learned a great deal in the process, such as greater coding skills, soldering techniques, and video editing skills...” Source: Cuyahoga County Team Captain John Ana>[...]

Airborne Affordable Flyers 11.26.24: BushCat's Back!, LODA Update, DRL Miami

Also: Van Celebrates 85th, Trio Pro Pilot Autopilot, Joby on MSFS24, Sonex Transition The BushCat was manufactured in South Africa by SkyReach beginning in 2014, selling its first >[...]

Airborne 12.02.24: Electra FG EIS, Prez Osprey Problems, Starship Wants 25

Also: EAA Ray Foundation, MagniX Records, Ruko U11MINI Drone, RCAF PC-21s Elektra Solar recently put the first aircraft from its Elektra Trainer Fixed-Gear (FG) family into service>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2024 Web Development & Design by Pauli Systems, LC