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Topic: Planet

NASA’s Hubble Space Telescope photos find Dark vortex in Neptune’s Atmosphere

 

Written by Donna Weaver / Ray Villard
Space Telescope Science Institute

NASA - National Aeronautics and Space AdministrationBaltimore, MD – New images obtained on May 16th, 2016, by NASA’s Hubble Space Telescope confirm the presence of a dark vortex in the atmosphere of Neptune. Though similar features were seen during the Voyager 2 flyby of Neptune in 1989 and by the Hubble Space Telescope in 1994, this vortex is the first one observed on Neptune in the 21st century.

The discovery was announced on May 17th, 2016, in a Central Bureau for Astronomical Telegrams (CBAT) electronic telegram by University of California at Berkeley research astronomer Mike Wong, who led the team that analyzed the Hubble data.

This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. The full visible-light image at left shows that the dark feature resides near and below a patch of bright clouds in the planet's southern hemisphere. The full-color image at top right is a close-up of the complex feature. The vortex is a high-pressure system. The image at bottom right shows that the vortex is best seen at blue wavelengths. (NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley))

This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. The full visible-light image at left shows that the dark feature resides near and below a patch of bright clouds in the planet’s southern hemisphere. The full-color image at top right is a close-up of the complex feature. The vortex is a high-pressure system. The image at bottom right shows that the vortex is best seen at blue wavelengths. (NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley))

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NASA’s Kepler Space Telescope discovers newly formed Exoplanet

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have discovered the youngest fully formed exoplanet ever detected. The discovery was made using NASA’s Kepler Space Telescope and its extended K2 mission, as well as the W. M. Keck Observatory on Mauna Kea, Hawaii. Exoplanets are planets that orbit stars beyond our sun.

The newfound planet, K2-33b, is a bit larger than Neptune and whips tightly around its star every five days. It is only 5 to 10 million years old, making it one of a very few newborn planets found to date.

K2-33b, shown in this illustration, is one of the youngest exoplanets detected to date. (NASA/JPL-Caltech)

K2-33b, shown in this illustration, is one of the youngest exoplanets detected to date. (NASA/JPL-Caltech)

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NASA’s Juno Spacecraft to enter orbit around Jupiter July 4th

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – On July 4th, NASA will fly a solar-powered spacecraft the size of a basketball court within 2,900 miles (4,667 kilometers) of the cloud tops of our solar system’s largest planet.

As of Thursday, Juno is 18 days and 8.6 million miles (13.8 million kilometers) from Jupiter. On the evening of July 4th, Juno will fire its main engine for 35 minutes, placing it into a polar orbit around the gas giant.

During the flybys, Juno will probe beneath the obscuring cloud cover of Jupiter and study its auroras to learn more about the planet’s origins, structure, atmosphere and magnetosphere.

This artist's rendering shows NASA's Juno spacecraft making one of its close passes over Jupiter. (NASA/JPL-Caltech)

This artist’s rendering shows NASA’s Juno spacecraft making one of its close passes over Jupiter. (NASA/JPL-Caltech)

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NASA discovers Small Asteroid that orbits the Sun and Earth

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A small asteroid has been discovered in an orbit around the sun that keeps it as a constant companion of Earth, and it will remain so for centuries to come.

As it orbits the sun, this new asteroid, designated 2016 HO3, appears to circle around Earth as well. It is too distant to be considered a true satellite of our planet, but it is the best and most stable example to date of a near-Earth companion, or “quasi-satellite.”

Asteroid 2016 HO3 has an orbit around the sun that keeps it as a constant companion of Earth. (NASA/JPL-Caltech)

Asteroid 2016 HO3 has an orbit around the sun that keeps it as a constant companion of Earth. (NASA/JPL-Caltech)

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NASA to release Kepler Space Telescope’s latest discoveries May 10th

 

Written by Felicia Chou
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA will host a news teleconference at 10:00am PDT (12:00pm CDT) Tuesday, May 10th to announce the latest discoveries made by its planet-hunting mission, the Kepler Space Telescope.

When Kepler was launched in March 2009, scientists did not know how common planets were outside our solar system. Thanks to Kepler’s treasure trove of discoveries, astronomers now believe there may be at least one planet orbiting every star in the sky.

Artist's concept of NASA's Kepler space telescope. (Image credit: NASA/JPL-Caltech)

Artist’s concept of NASA’s Kepler space telescope. (Image credit: NASA/JPL-Caltech)

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NASA Researchers are developing new technologies to discover Earth-like Planets beyond our Solar System

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – We humans might not be the only ones to ponder our place in the universe. If intelligent aliens do roam the cosmos, they too might ask a question that has gripped humans for centuries: Are we alone?

These aliens might even have giant space telescopes dedicated to studying distant planets and searching for life. Should one of those telescopes capture an image of our blue marble of a planet, evidence of forests and plentiful creatures would jump out as simple chemicals: oxygen, ozone, water and methane.

The vacuum chamber at NASA's Jet Propulsion Laboratory in Pasadena, California, used for testing WFIRST and other coronagraphs. (NASA/JPL-Caltech)

The vacuum chamber at NASA’s Jet Propulsion Laboratory in Pasadena, California, used for testing WFIRST and other coronagraphs. (NASA/JPL-Caltech)

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NASA scientists research ways to discover habitable planets

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists are getting closer to finding worlds that resemble our own “blue marble” of a planet. NASA’s Kepler mission alone has confirmed more than 1,000 planets outside our solar system — a handful of which are a bit bigger than Earth and orbit in the habitable zones of their stars, where liquid water might exist.

Some astronomers think the discovery of Earth’s true analogs may be around the corner. What are the next steps to search for life on these potentially habitable worlds?

This illustration shows the prototype starshade, a giant structure designed to block the glare of stars so that future space telescopes can take pictures of planets.

This illustration shows the prototype starshade, a giant structure designed to block the glare of stars so that future space telescopes can take pictures of planets.

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NASA’s Cassini spacecraft examines Methane Sea on Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Of the hundreds of moons in our solar system, Titan is the only one with a dense atmosphere and large liquid reservoirs on its surface, making it in some ways more like a terrestrial planet.

Both Earth and Titan have nitrogen-dominated atmospheres — over 95 percent nitrogen in Titan’s case. However, unlike Earth, Titan has very little oxygen; the rest of the atmosphere is mostly methane and trace amounts of other gases, including ethane. And at the frigid temperatures found at Saturn’s great distance from the sun, the methane and ethane can exist on the surface in liquid form.

Sunlight glints off of Titan's northern seas this near-infrared, color mosaic from NASA's Cassini spacecraft. (NASA/JPL/Univ. Arizona/Univ. Idaho)

Sunlight glints off of Titan’s northern seas this near-infrared, color mosaic from NASA’s Cassini spacecraft. (NASA/JPL/Univ. Arizona/Univ. Idaho)

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NASA uses satellite data to solve questions about Earth’s rotational wobbles

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Using satellite data on how water moves around Earth, NASA scientists have solved two mysteries about wobbles in the planet’s rotation — one new and one more than a century old. The research may help improve our knowledge of past and future climate.

Although a desktop globe always spins smoothly around the axis running through its north and south poles, a real planet wobbles. Earth’s spin axis drifts slowly around the poles; the farthest away it has wobbled since observations began is 37 feet (12 meters).

Earth does not always spin on an axis running through its poles. Instead, it wobbles irregularly over time, drifting toward North America throughout most of the 20th Century (green arrow). That direction has changed drastically due to changes in water mass on Earth. (NASA/JPL-Caltech)

Earth does not always spin on an axis running through its poles. Instead, it wobbles irregularly over time, drifting toward North America throughout most of the 20th Century (green arrow). That direction has changed drastically due to changes in water mass on Earth. (NASA/JPL-Caltech)

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NASA’s Spitzer Space Telescope helps create Temperature Map of a Super Earth

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Observations from NASA’s Spitzer Space Telescope have led to the first temperature map of a super-Earth planet — a rocky planet nearly two times as big as ours. The map reveals extreme temperature swings from one side of the planet to the other, and hints that a possible reason for this is the presence of lava flows.

“Our view of this planet keeps evolving,” said Brice Olivier Demory of the University of Cambridge, England, lead author of a new report appearing in the March 30 issue of the journal Nature. “The latest findings tell us the planet has hot nights and significantly hotter days. This indicates the planet inefficiently transports heat around the planet. We propose this could be explained by an atmosphere that would exist only on the day side of the planet, or by lava flows at the planet surface.”

This illustration shows one possible scenario for the hot, rocky exoplanet called 55 Cancri e, which is nearly two times as wide as Earth. (NASA/JPL-Caltech)

This illustration shows one possible scenario for the hot, rocky exoplanet called 55 Cancri e, which is nearly two times as wide as Earth. (NASA/JPL-Caltech)

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