GREENBELT, Md. (NASA PR) — Its size and surface gravity are much larger than Earth’s, and its radiation environment may be hostile, but a distant planet called K2-18b has captured the interest of scientists all over the world. For the first time, researchers have detected water vapor signatures in the atmosphere of a planet beyond our solar system that resides in the “habitable zone,” the region around a star in which liquid water could potentially pool on the surface of a rocky planet.
By Francis Reddy NASA’s Goddard Space Flight Center
GREENBELT, Md. (NASA PR) — NASA’s newest planet hunter, the Transiting Exoplanet Survey Satellite (TESS), has discovered three new worlds — one slightly larger than Earth and two of a type not found in our solar system — orbiting a nearby star. The planets straddle an observed gap in the sizes of known planets and promise to be among the most curious targets for future studies.
TESS Object of Interest (TOI) 270 is a faint, cool star more commonly identified by its catalog name: UCAC4 191-004642. The M-type dwarf star is about 40% smaller than the Sun in both size and mass, and it has a surface temperature about one-third cooler than the Sun’s. The planetary system lies about 73 light-years away in the southern constellation of Pictor.
By Ravyn Cullor NASA’s Goddard Space Flight Center
GREENBELT, Md. (NASA PR) — NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered 21 planets outside our solar system and captured data on other interesting events occurring in the southern sky during its first year of science. TESS has now turned its attention to the Northern Hemisphere to complete the most comprehensive planet-hunting expedition ever undertaken.
PASADENA, Calif. (NASA-JPL-Caltech PR) — Anyone who’s ever seen aircraft engaged in formation flying can appreciate the feat of staying highly synchronized while airborne. In work sponsored by NASA’s Exoplanet Exploration Program (ExEP), engineers at the Jet Propulsion Laboratory in Pasadena, California, are taking formation flying to a new extreme.
Their work marks an important milestone within a larger program to test the feasibility of a technology called a starshade. Although starshades have never flown in space, they hold the potential to enable groundbreaking observations of planets beyond our solar system, including pictures of planets as small as Earth.
Made in Space will continue to pursue the development of advanced glass alloys and 3-D manufactured structures for space interferometry missions under a pair of contract awards from NASA.
The space agency selected the additive-manufacturing company for awards under phase II of its Small Business Innovation Research (SBIR) program. The contracts are worth a maximum of $750,000 apiece for up to two years.
“The next step in the industrialization of LEO is the formulation of base materials, such as specialty glasses, that can be refined into higher value products in microgravity,” the company said in a summary of its proposal. “The Glass Alloy Manufacturing Machine (GAMMA) is an experimental system designed to investigate how these materials form without the effects of gravity-induced flows and inform process improvements for commercial product development.”
NASA Innovative Advanced Concepts (NIAC) Program Phase I Award: Up to $125,000 for 9 Months
Dual Use Exoplanet Telescope (DUET) Tom Ditto 3DeWitt LLC
The Dual Use Exoplanet Telescope (DUET) advances NASA’s discovery missions to find and characterize exo-planetary systems. The novel telescope design has the ability to detect exoplanets both indirectly (with radial velocity and astrometry techniques) and directly with advanced spectroscopy. DUET has an annulus gossamer membrane holographic primary objective that has four times the collection area and twice the diameter of the largest planned ground telescopes, yet its mass and stowage allow it to be delivered on a single lifter.
Unlike competing exoplanet finders, DUET does not require a coronagraph or star shade. It subtracts the parent star by taking advantage of the differences between the wavelengths of the star and its planets as a function of the distances between them. This is made possible by using a dual dispersion technique first studied by Newton in his famous prism experiment. In this telescope, wavelength is proportional to the distance of an exoplanet from its parent star.
The mission will result in a census of planets on half of all visible stars. In the “neighborhood” of earth, DUET will make spectrographic characterizations. DUET will deliver a positive signal for any water bearing planets using a Rayleigh scattering method in the near UV that in our solar system is unique to earth. Earth may be a “pale blue dot,” but in the near-UV it is luminescent. Such a signal for an exoplanet on an A, F or G class main sequence star would point to Earth 2.0.
MADRID (ESA PR) — ESA’s Characterising Exoplanet Satellite, Cheops, was recently declared ready to fly after completing a series of final spacecraft tests.
Cheops will lift off as a secondary passenger on a Soyuz-Fregat rocket launching from Europe’s Spaceport in Kourou, French Guiana. The satellite will be stored at the Airbus Defence and Space facility in Madrid for a few months before being shipped to the launch site, targeting the launch time slot between 15 October and 14 November in 2019. (more…)
GREENBELT, Md. (NASA PR) — Scientists looking for signs of life beyond our solar system face major challenges, one of which is that there are hundreds of billions of stars in our galaxy alone to consider. To narrow the search, they must figure out: What kinds of stars are most likely to host habitable planets?
SYDNEY, Australia (University of Sydney PR) — Just months after its mission ended and a decade after its launch, glimmers of data detected by NASA’s Kepler space telescope in 2009 have been confirmed as evidence for a large, hot-Jupiter-like planet orbiting a star 2600 light years from Earth.
That 10-year mission to find distant planets around distant stars has shown that the universe is literally teeming with planets. There are more than 2300 confirmed exoplanets, ranging from huge gas giants to rocky worlds, perhaps not dissimilar to Earth.
By Francis Reddy NASA’s Goddard Space Flight Center
NASA’s Transiting Exoplanet Survey Satellite (TESS) has found three confirmed exoplanets, or worlds beyond our solar system, in its first three months of observations.
The mission’s sensitive cameras also captured 100 short-lived changes — most of them likely stellar outbursts — in the same region of the sky. They include six supernova explosions whose brightening light was recorded by TESS even before the outbursts were discovered by ground-based telescopes.
EL SEGUNDO, Calif., Nov. 19, 2018 – In a new development in the search for potentially habitable planets far beyond our solar system, JPL and Aerospace are conducting a study to further develop an innovative deep-space concept that relies on a solar gravity lens (SGL) to enable enhanced viewing of exoplanets.
The SGL would provide 100-billion optical magnification, allowing it to show details as small as 10 kilometers across – similar to being able to spot something the size of New York City on an exoplanet.
BOULDER, Colo. (NASA PR) — On Thursday evening, NASA’s Kepler space telescope received its final set of commands to disconnect communications with Earth. The “goodnight” commands finalize the spacecraft’s transition into retirement, which began on Oct. 30 with NASA’s announcement that Kepler had run out of fuel and could no longer conduct science.
WASHINGTON (NASA PR) — After nine years in deep space collecting data that indicate our sky to be filled with billions of hidden planets – more planets even than stars – NASA’s Kepler space telescope has run out of fuel needed for further science operations. NASA has decided to retire the spacecraft within its current, safe orbit, away from Earth. Kepler leaves a legacy of more than 2,600 planet discoveries from outside our solar system, many of which could be promising places for life.