Tag Archives: NASA

Two exoplanet discoveries supply new understanding of Earth’s

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photo of Keivan Stassun
Keivan Stassun (Vanderbilt College/John Russell)

Two worldwide groups of astronomers, aided by Vanderbilt College analysis, have found a various pair of exoplanets, that are offering new insights into Earth’s origins and future.

The astronomers recognized each exoplanets—that’s, planets orbiting stars outdoors our photo voltaic system—following an interstellar survey performed by NASA’s Transiting Exoplanet Survey Satellite tv for pc mission, developed partly by a group led by Stevenson Professor of Physics and Astronomy Keivan Stassun.

TOI-849b, which has a 12 months that lasts 18 hours, is analogous in measurement to Neptune however with a considerably increased mass and density. These contradictory traits have led researchers to deduce that the exoplanet is the uncovered core of what could have began out as a typical gasoline big like Jupiter. In keeping with a launch, the invention of TOI-849b is the primary of its type.

The article concerning the discovery, “A remnant planetary core within the hot-Neptune desert,” was revealed within the journal Nature on July 1.

There are two theories about how the planet’s core might have turn into so unusually uncovered. TOI-849b may need began out as a gaseous planet that misplaced its outer ambiance by being too near its star or colliding with one other planet. Or alternatively, it maybe by no means had an environment to start with, as a result of delayed formation. Regardless, its existence supplies astronomers a singular alternative to review the core of a planet—one thing that isn’t doable in our personal photo voltaic system.

“By means of the invention of TOI-849b, we are able to ponder whether different planets, together with our personal, could very effectively have began out extra like Neptune and over time, both due to residual warmth throughout formation or incident radiation from the solar, brought about a lot of Earth’s thicker ambiance to be boiled off,” mentioned Stassun, the paper’s co-author. “Within the case of TOI-849b, we approximate that this occurred inside the first billion years of the planet’s formation.”

On this illustration, WD 1856 b, a possible Jupiter-size planet, orbits its dim white dwarf star daily and a half. (NASA’s Goddard House Flight Middle)

WD 1856 b is the remnant of a planet that’s orbiting a stellar corpse generally known as a white dwarf—what was as soon as a sun-like star however now a relic not a lot bigger than the dimensions of Earth. Earlier than the host star collapsed and have become a white dwarf, its outer gaseous layer expanded and engulfed WD 1856 b however didn’t destroy it. WD 1856 b is the primary recognized planet that has remained intact after such an occasion, opening many questions on the way it arrived and survived in its present location.

An article detailing the invention of WD 1856 b, “A Large Planet Candidate Transiting a White Dwarf,” was revealed within the Sept. 17 subject of Nature.

“Earlier than this discovery, many astronomers assumed that the seek for planets orbiting white dwarfs was pointless. This white dwarf planet tells us that it isn’t,” mentioned Stassun, explaining that astronomers will use this discovery to raised perceive all planets and their potential habitability. “In about 5 billion years, our personal Earth will ultimately expertise the same destiny, being engulfed by our solar because it dies. Will Earth survive that inferno like this planet has? It’s only with a whole set of demographics of planets round totally different stars that we are able to piece collectively the complete household tree of planets.”

In a launch from NASA, Lisa Kaltenegger, the director of Cornell College’s Carl Sagan Institute, explains, “After a system settles down round a white dwarf, it might probably stay steady for billions of years because the star cools. Actually, planets in white dwarf liveable zones might keep situations favorable for all times longer than the time scale predicted for Earth. WD 1856 b suggests planets could survive white dwarfs’ chaotic histories. Now we are able to take into consideration the intriguing prospects for all times on worlds orbiting these lifeless stellar cores.”

Stassun expects that each planets might be studied additional: TOI-849b by the Twinkle mission, of which he’s a founding member, and WD 1856 b by means of TESS. “Till 15 years in the past, all we knew about planets was what we might observe in our personal photo voltaic system,” he mentioned. “These excessive discoveries put our photo voltaic system in context of the bigger realm of prospects of what photo voltaic techniques throughout the universe might be like.”

The neurodiverse group of researchers on the Frist Middle for Autism and Innovation, which Stassun directs, performed a task in creating a lot of the info visualization for each discoveries.

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Two exoplanet discoveries provide new understanding of Earth’s

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photo of Keivan Stassun
Keivan Stassun (Vanderbilt College/John Russell)

Two worldwide groups of astronomers, aided by Vanderbilt College analysis, have found a various pair of exoplanets, that are offering new insights into Earth’s origins and future.

The astronomers recognized each exoplanets—that’s, planets orbiting stars outdoors our photo voltaic system—following an interstellar survey performed by NASA’s Transiting Exoplanet Survey Satellite tv for pc mission, developed partially by a staff led by Stevenson Professor of Physics and Astronomy Keivan Stassun.

TOI-849b, which has a yr that lasts 18 hours, is comparable in dimension to Neptune however with a considerably greater mass and density. These contradictory traits have led researchers to deduce that the exoplanet is the uncovered core of what could have began out as a typical fuel big like Jupiter. In response to a launch, the invention of TOI-849b is the primary of its form.

The article in regards to the discovery, “A remnant planetary core within the hot-Neptune desert,” was revealed within the journal Nature on July 1.

There are two theories about how the planet’s core may have grow to be so unusually uncovered. TOI-849b might need began out as a gaseous planet that misplaced its outer ambiance by being too near its star or colliding with one other planet. Or alternatively, it maybe by no means had an environment to start with, because of delayed formation. Regardless, its existence gives astronomers a novel alternative to check the core of a planet—one thing that’s not attainable in our personal photo voltaic system.

“By way of the invention of TOI-849b, we are able to wonder if different planets, together with our personal, could very nicely have began out extra like Neptune and over time, both due to residual warmth throughout formation or incident radiation from the solar, brought on a lot of Earth’s thicker ambiance to be boiled off,” stated Stassun, the paper’s co-author. “Within the case of TOI-849b, we approximate that this occurred inside the first billion years of the planet’s formation.”

On this illustration, WD 1856 b, a possible Jupiter-size planet, orbits its dim white dwarf star daily and a half. (NASA’s Goddard House Flight Heart)

WD 1856 b is the remnant of a planet that’s orbiting a stellar corpse often called a white dwarf—what was as soon as a sun-like star however now a relic not a lot bigger than the scale of Earth. Earlier than the host star collapsed and have become a white dwarf, its outer gaseous layer expanded and engulfed WD 1856 b however didn’t destroy it. WD 1856 b is the primary recognized planet that has remained intact after such an occasion, opening many questions on the way it arrived and survived in its present location.

An article detailing the invention of WD 1856 b, “A Big Planet Candidate Transiting a White Dwarf,” was revealed within the Sept. 17 situation of Nature.

“Earlier than this discovery, many astronomers assumed that the seek for planets orbiting white dwarfs was pointless. This white dwarf planet tells us that it isn’t,” stated Stassun, explaining that astronomers will use this discovery to higher perceive all planets and their potential habitability. “In about 5 billion years, our personal Earth will finally expertise an identical destiny, being engulfed by our solar because it dies. Will Earth survive that inferno like this planet has? It’s only with a whole set of demographics of planets round completely different stars that we are able to piece collectively the total household tree of planets.”

In a launch from NASA, Lisa Kaltenegger, the director of Cornell College’s Carl Sagan Institute, explains, “After a system settles down round a white dwarf, it may stay secure for billions of years because the star cools. In actual fact, planets in white dwarf liveable zones may preserve situations favorable for all times longer than the time scale predicted for Earth. WD 1856 b suggests planets could survive white dwarfs’ chaotic histories. Now we are able to take into consideration the intriguing prospects for all times on worlds orbiting these useless stellar cores.”

Stassun expects that each planets might be studied additional: TOI-849b by the Twinkle mission, of which he’s a founding member, and WD 1856 b by means of TESS. “Till 15 years in the past, all we knew about planets was what we may observe in our personal photo voltaic system,” he stated. “These excessive discoveries put our photo voltaic system in context of the bigger realm of prospects of what photo voltaic methods throughout the universe could be like.”

The neurodiverse staff of researchers on the Frist Heart for Autism and Innovation, which Stassun directs, performed a job in creating a lot of the information visualization for each discoveries.

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Nationwide Academies committee together with Vanderbilt astrophysicist publishes overview of newest NASA Science Plan | Vanderbilt Information

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This month, a committee inside the Nationwide Academies of Sciences, Engineering and Drugs revealed its overview of NASA’s up to date Science Plan. Amongst these named to the unique committee answerable for reviewing the plan is Keivan Stassun, Stevenson Endowed Professor of Physics and Astronomy at Vanderbilt.

The Science Plan, like its predecessors in prior many years, is a five-year, forward-looking roadmap that is a crucial complement to the Nationwide Academies’ Decadal Survey for Astronomy and Astrophysics. The place the Decadal Survey units the science agenda for the sector, the Science Plan establishes “how,” laying out the imaginative and prescient, rules and techniques by which NASA’s Science Mission Directorate will fulfill the agenda.

Keivan Stassun (Vanderbilt College/Susan Urmy)

Prematurely of publishing the Science Plan, Affiliate Administrator Thomas H. Zurbuchen of the Science Mission Directorate requested a overview from the Nationwide Academies’ House Research Board, who hand-picked committee members in summer time 2019.

Members had been chosen for his or her various views and technical experience in every of the main areas represented by the general Directorate, particularly, astrophysics, earth science, heliophysics, planetary science, and house engineering and know-how. Along with Vanderbilt, notable establishments represented within the overview report embody the SETI Institute and the Carnegie Establishment for Science.

“It’s vital that Vanderbilt is getting tapped extra regularly for committees comparable to this one, the place we may give voice to the function of analysis universities typically and to Vanderbilt’s management particularly,” stated Stassun. “We had been capable of name consideration to the important function of analysis universities as companions for analysis and growth in NASA missions, complementing the experience and capabilities of NASA’s personal analysis facilities. Notably, we had been additionally capable of assist reposition range as core to innovation – one of many Science Mission Directorate’s management priorities – and spotlight Vanderbilt’s signature efforts as exemplars for creating the long run various NASA workforce.”

Study extra concerning the Nationwide Academies of Sciences, Engineering, and Drugs at www.nationalacademies.org.

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Trump berates NASA for not talking about mission to Mars

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President Trump on Friday scolded NASA for focusing on a return trip to the moon and insisted that Mars was a better destination.

“For all of the money we are spending, NASA should NOT be talking about going to the Moon — We did that 50 years ago. They should be focused on the much bigger things we are doing, including Mars (of which the Moon is a part), Defense and Science!” the commander in chief tweeted from aboard Air Force One while returning from D-Day commemoration in France.

Last month, Trump said during an appearance with Japanese Prime Minister Shinzo Abe that Japan and the US would launch a mission to Mars “very soon.”

“We’ll be going to the moon,” he said then. “We’ll be going to Mars very soon.”

NASA is operating under a plan that could launch a manned craft to Mars by 2033, and Trump himself a month ago sounded more gung-ho about another moon landing than a trip to Mars.

“Under my Administration, we are restoring @NASA to greatness and we are going back to the Moon, then Mars. I am updating my budget to include an additional $1.6 billion so that we can return to Space in a BIG WAY!” he tweeted.



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