Topic: Venus

NASA says Venus, Jupiter, Mercury to Align in Triple Conjunction in the Sunset Sky May 25th

May 11, 2013 |

Written by Dr. Tony Phillips
Science at NASA

Washington, D.C. – Sunset is a special time of day.  Low-hanging clouds glow vivid red and orange as the background sky turns cobalt blue. The first stars pop out in the heavenly dome overhead, eliciting wishes from backyard sky watchers.

The sunset of May 26th will be extra special. On that date, Venus, Jupiter and Mercury will gather in the fading twilight to form a bright triangle only three degrees wide.

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NASA’s Kepler Space Telescope finds Planet near the size of Earth orbiting in the Habitable Zone of another Star

April 19, 2013 |

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

Pasadena, CA – NASA’s Kepler mission has discovered two new planetary systems that include three super-Earth-size planets in the “habitable zone,” the range of distance from a star where the surface temperature of an orbiting planet might be suitable for liquid water.

The Kepler-62 system has five planets: 62b, 62c, 62d, 62e and 62f. The Kepler-69 system has two planets: 69b and 69c. Kepler-62e, 62f and 69c are the super-Earth-sized planets.

The artist’s concept depicts Kepler-62f, a super-Earth-size planet in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra. (Credit: NASA/Ames/JPL-Caltech)

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NASA answers the question, “Is There an Atmosphere on the Moon?”

April 15, 2013 |

Written by Brian Day
NASA’s Ames Research Center

Moffett Field, CA – Until recently, most everyone accepted the conventional wisdom that the moon has virtually no atmosphere.

Just as the discovery of water on the moon transformed our textbook knowledge of Earth’s nearest celestial neighbor, recent studies confirm that our moon does indeed have an atmosphere consisting of some unusual gases, including sodium and potassium, which are not found in the atmospheres of Earth, Mars or Venus.

It’s an infinitesimal amount of air when compared to Earth’s atmosphere.

The Lunar Atmospheric Composition Experiment (LACE) deployment during the Apollo 17 mission. (Image credit: NASA)

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NASA’s Cassini spacecraft sees Venus from orbit around Saturn

March 5, 2013 |

Written by Jia-Rui Cook
NASA’s Jet Propulsion Laboratory

Pasadena, CA – A distant world gleaming in sunlight, Earth’s twin planet, Venus, shines like a bright beacon in images taken by NASA’s Cassini spacecraft in orbit around Saturn.

One special image of Venus and Saturn was taken last November when Cassini was placed in the shadow of Saturn. This allowed Cassini to look in the direction of the sun and Venus, and take a backlit image of Saturn and its rings in a particular viewing geometry called “high solar phase.” This observing position reveals details about the rings and Saturn’s atmosphere that cannot be seen in lower solar phase.

Peering over the shoulder of giant Saturn, through its rings, and across interplanetary space, NASA’s Cassini spacecraft spies the bright, cloudy terrestrial planet, Venus. The vast distance from Saturn means that Venus only shows up as a white dot, just above and to the right of the image center. (Image credit: NASA/JPL-Caltech/Space Science Institute)

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NASA’s Kepler Space Telescope spots new Planetary System with Small Planets

February 21, 2013 |

Written by Dr. Tony Phillips
Science at NASA

Washington, D.C. – NASA’s Kepler mission scientists have discovered a new planetary system that is home to the smallest planet yet found around a star similar to our sun.

The planets are located in a system called Kepler-37, about 210 light-years from Earth in the constellation Lyra. The smallest planet, Kepler-37b, is slightly larger than our moon, measuring about one-third the size of Earth. It is smaller than Mercury, which made its detection a challenge.

This line up compares artist’s concepts of the planets in the Kepler-37 system to the Moon and planets in our own solar system.

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NASA’s Cassini spacecraft to take first images of Saturn’s Transit of Venus from deep space

December 21, 2012 |

Written by Dr. Tony Phillips
Science at NASA

Washington, D.C. – Last June, astronomers urged sky watchers to observe the transit of Venus. It was a once in a lifetime opportunity, they said. The black disk of the second planet wouldn’t crawl across the face of the sun again for more than 100 years.

In fact, it’s happening again this week–not on Earth, but Saturn.

“On Friday, December 21st, there will be a transit of Venus visible from Saturn, and we will be watching it using  the Cassini spacecraft,” says Phil Nicholson, a Cassini science team member from Cornell University. “This will be the first time a transit of Venus has been observed from deep space.”

A transit of Venus seen from Earth on June 6th, 2012. (Photo credit: Bum-Suk Yeom of Daejeon, South Korea)

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NASA’s Cassini spacecraft observes Atmosphere Circulation change on Saturn’s moon Titan

November 29, 2012 |

Written by Jia-Rui C. Cook
NASA’s Jet Propulsion Laboratory

Pasadena, CA – Data from NASA’s Cassini spacecraft tie a shift in seasonal sunlight to a wholesale reversal, at unexpected altitudes, in the circulation of the atmosphere of Saturn’s moon Titan. At the south pole, the data show definitive evidence for sinking air where it was upwelling earlier in the mission.

So the key to circulation in the atmosphere of Saturn’s moon Titan turned out to be a certain slant of light. The paper was published today in the journal Nature.

This artist’s impression of Saturn’s moon Titan shows the change in observed atmospheric effects before, during and after equinox in 2009. The Titan globes also provide an impression of the detached haze layer that extends all around the moon (blue). This image was inspired by data from NASA’s Cassini mission. (Image Credit: ESA)

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NASA’s Cassini spacecraft takes image of Saturn’s moon Titan glowing in the dark for Halloween

November 1, 2012 |

Written by Jia-Rui C. Cook
NASA’s Jet Propulsion Laboratory

Pasadena, CA – A literal shot in the dark by imaging cameras on NASA’s Cassini spacecraft has yielded an image of a visible glow from Titan, emanating not just from the top of Titan’s atmosphere, but also – surprisingly – from deep in the atmosphere through the moon’s haze.

A person in a balloon in Titan’s haze layer wouldn’t see the glow because it’s too faint – something like a millionth of a watt. Scientists were able to detect it with Cassini because the spacecraft’s cameras are able to take long-exposure images.

This set of images from NASA’s Cassini spacecraft shows Saturn’s moon Titan glowing in the dark. Titan was behind Saturn at the time, in eclipse from the sun. The image on the left is a calibrated, but unprocessed image from Cassini’s imaging camera. The image on the right was processed to exclude reflected light off Saturn and it is clear that even where Titan did not receive any Saturnshine, it is still emitting light. (Image credit: NASA/JPL-Caltech/SSI)

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Astronomers observe Red Giant destroying one of it’s Planets, Could our Sun do the same to the Earth

October 27, 2012 |

Written by Dr. Tony Phillips
Science at NASA

Washington, D.C. – An international team of astronomers has caught a star in the act of devouring one of its planets. BD+48 740, a red giant they observed using the 9.2-meter Hobby-Eberly Telescope at the McDonald Observatory in Texas, appears to have the fumes of a scorched planet in its atmosphere. This is consistent with a rocky world, recently destroyed.

Could the same thing happen to Earth?

Yes indeed, says Alex Wolszczan, a member of the research team from Penn State University: “A similar fate may await the inner planets in our solar system when the sun becomes a red giant some five billion years from now.”

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NASA’s Cassini Spacecraft images show shallow seas and other curiosities on Saturns’ moon Titan

October 17, 2012 |

Written by Jia-Rui C. Cook
NASA’s Jet Propulsion Laboratory

Pasadena, CA – Radar images from NASA’s Cassini spacecraft reveal some new curiosities on the surface of Saturn’s mysterious moon Titan, including a nearly circular feature that resembles a giant hot cross bun and shorelines of ancient seas.

The results were presented today at the American Astronomical Society’s Division of Planetary Sciences conference in Reno, Nevada.

NASA’s Cassini spacecraft obtained this image of a feature shaped like a hot cross bun in the northern region of Titan (left) that bears a striking resemblance to a similar feature on Venus (right). (Image Credit: NASA/JPL-Caltech/ASI)

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