«We frequently see the Lyman - alpha emission line of hydrogen
in nearby stars,» says Adi Zitrin, the discovery paper's lead author.
When a black hole pulls
in nearby stars and gas clumps, the material circles the dark object, like water around a drain.
Using the Large Binocular Telescope Interferometer, or LBTI, in Arizona, the HOSTS Survey determines the brightness and density of warm dust floating
in nearby stars» habitable zones, where liquid water could exist on the surface of a planet.
The solar wind of charged particles and magnetic fields blows through a fog of primordial dust and neutrally charged atoms created
in nearby stars or the uppermost reaches of Earth's atmosphere.
NASA thinks we can find another Earth
in another nearby star.
The brightest object
in a nearby star cluster, thought for decades to be a single star, is actually two massive stars in the process of merging.
Most of those detected are located
in nearby star forming regions, which are all fairly small and have a low density of stars.
The Pan-STARRS1 Proper - motion Survey for Young Brown Dwarfs
in Nearby Star - forming Regions.
Not exact matches
Former astronaut John Grunsfeld added, «I think we're one generation away
in our solar system, whether it's on an icy moon or on Mars, and one generation [away] on a planet around a
nearby star»...
And there's the Gamecocks» quiet
star, the humble, soft - spoken Alshon Jeffery, a 6» 4», 229 - pound wide receiver who grew up
in nearby St. Matthews idolizing Reggie Bush, Matt Leinart and Dwayne Jarrett.
All of it happens from 8 to 10 a.m. so the players can spend the rest of the day at
nearby Lone
Star High
in Frisco.
TESS is expected to perform an all - sky survey focused on finding transiting rocky planets around
nearby stars, planets that could then be studied
in further detail by NASA's James Webb Space Telescope, which would launch no sooner than 2018.
The supernova, known as SN1987A, was first seen by observers
in the Southern Hemisphere
in 1987 when a giant
star suddenly exploded at the edge of a
nearby dwarf galaxy called the Large Magellanic Cloud.
Because this scenario depends on the presence of
nearby stars, we expect DCBHs to typically form
in satellite galaxies that orbit around larger parent galaxies where Population III
stars have already formed.
Looking at stellar size and luminosity, they discovered that most
nearby stars were created
in two bursts — one 30 million years ago and the other less than 5 million years ago.
After reaching its orbit
in about two months, the telescope will start scanning
nearby stars telltale dips
in light that signal a passing planet.
Thanks to new detectors that can pick up neutrino signals and even gravitational waves, scientists will be ready when the next
nearby star explodes, Emily Conover reported
in «Waiting for a supernova» (SN: 2/18/17, p. 24).
One
nearby example, the bright
star Betelgeuse
in the constellation Orion, is at least as wide as the orbit of Mars.
Radiation from young
stars is known to cause
nearby gas clouds to glow
in a particular way.
The planets circle a tiny, dim,
nearby star in tight orbits all less than 2 weeks long.
In order to understand these processes, one of Webb's Director's Discretionary Early Release Science projects will examine a
nearby star - forming region to determine which ices are present where.
Dubbed Dragonfly 44, this
nearby group of
stars (yellowish smudge at center of right image) was discovered just last year and apparently has less than 1 % the number of
stars in our Milky Way galaxy.
But inventories of the
stars and gas
in the
nearby universe have revealed only about half the matter that is predicted by cosmological models.
Based on various lines of indirect evidence, astronomers are fairly sure that the sun is surrounded by a huge cloud of dormant comets — trillions of them, probably — that move
in lazy orbits extending halfway to the
nearby stars.
«But Gaia also measures
star positions
in nearby galaxies», explains University of Groningen astronomer Davide Massari.
«Massive fails» like this one
in a
nearby galaxy could explain why astronomers rarely see supernovae from the most massive
stars, said Christopher Kochanek, professor of astronomy at The Ohio State University and the Ohio Eminent Scholar
in Observational Cosmology.
He tested it on the
nearby star Altair
in 2006, and found that he could clearly see how the
star's rapid rotation whips it up into a roughly egglike shape.
Earlier studies had suggested that the gravity of
nearby stars would have ripped apart these primordial clumps, but the new simulations show that this would only happen
in the crowded core of galaxies, leaving the clumps
in the galactic suburbs intact (arxiv.org/abs/1006.3392).
The researchers observed FRB 150807 while monitoring a
nearby pulsar — a rotating neutron
star that emits a beam of radio waves and other electromagnetic radiation —
in our galaxy using the Parkes radio telescope
in Australia.
He says the dearth of
nearby planets suggests that the hot Jupiters formed farther out, and after a run -
in with another planet or
star, were pushed onto elongated orbits that ultimately led them to cross paths with any planets between their original orbits and the sun.
Larger Bok globules
in quieter locations often collapse to form new
stars but the ones
in this picture are under fierce bombardment from the ultraviolet radiation from
nearby hot young
stars.
These opaque blobs resemble drops of ink floating
in a strawberry cocktail, their whimsical shapes sculpted by powerful radiation coming from the
nearby brilliant young
stars.
Modern astronomers have yet to see one
in our Milky Way but have managed to witness a few dozen
in nearby galaxies with known progenitor
stars.
Meanwhile, astronomers have observed the formation of organic chemicals
in stellar nebulae and discovered over 70 Jupiter - sized extrasolar planets circling
nearby stars.
The planet was found with the radial velocity method, a planet - hunting technique that relies upon slight variations
in the velocity of a
star to determine the gravitational pull exerted by
nearby planets that are too faint to observe directly with a telescope.
Newborn planets
in other solar systems endure «catastrophic» collisions for hundreds of millions of years, according to a new astronomical survey of
nearby stars.
To begin with, they orbited close to the plane of the ecliptic
in the same direction as the planets, but their orbits were deformed by the galaxy's tidal force and by interactions with
nearby stars, gradually becoming more inclined and forming a more or less spherical reservoir,» Morais said.
«The result is almost certainly correct, as predicting the nearly straight - line motion of
nearby stars is a well - understood calculation,» says astronomer Adam Burgasser of the University of California, San Diego, who was not involved
in the study.
If two neutron
stars were to merge
in a
nearby galaxy, the resulting wave would squish and stretch the space - time near Earth by about a millionth of the diameter of an atom as it passed through us.
Theories predict that most
stars arise
in groups, so astronomers expected the apparently juvenile Beta Pic to have
nearby companions hatched from the same gaseous nursery.
But until astronomers began finding planets around other
stars, no one calculated how swallowing
nearby objects would affect a
star, says theoretical astrophysicist Mario Livio of the Space Telescope Science Institute
in Baltimore.
Pulsars form when
stars at least 1.4 times larger than our sun blow up
in supernovas; these powerful explosions usually knock
nearby stars out
1 Astronomers Margaret Turnbull and Jill Tarter of the Carnegie Institution
in Washington, D.C., have compiled a list of 17,129
nearby stars most likely to have planets that could support complex life.
Launching
in 2017, NASA's Transiting Exoplanet Survey Satellite (TESS) and ESA's Characterizing Exoplanets Satellite (CHEOPS) should collectively discover and study many more worlds like 55 Cancri e circling
nearby stars.
We usually use it to look for very faint planets
in the close vicinity of
nearby stars, by painstakingly observing them one by one,» said Pueyo.
«It's not so much the numbers of planets that we care about, but the fact that they are orbiting
nearby stars,» says Sara Seager, an astrophysicist at the Massachusetts Institute of Technology (MIT)
in Cambridge and deputy science director for TESS.
By the time Webb is operational, Clampin says, another NASA mission, the Transiting Exoplanet Survey Satellite (TESS), slated for launch
in 2017, will already be producing a short list of other potentially habitable rocky planets around
nearby small
stars.
The three toepads visible to modern telescopes, as well as the claw - like regions
in the
nearby Lobster Nebula, are actually regions of gas — predominantly hydrogen — energised by the light of brilliant newborn
stars.
Detected with the newly upgraded Very Large Array of telescopes
in New Mexico, the maser appears when interstellar methanol molecules get heated up by
nearby stars.
Astronomers have noted that such streams of
stars are relatively common
in the outer regions of spiral galaxies, a phenomenon that has been observed on the outskirts of the Milky Way as well as around the
nearby Andromeda galaxy.