An international team
of astronomers looked for clues in the early universe.
Not exact matches
Astronomers looked at the available evidence and concluded that really there must be some sort
of «cement» that binds all the universe together, for the evidence was staring them in the face.
Astronomers did not realize back then that the type
of lenses they were using smeared the images
of stars slightly, making them
look bigger than they are.
Astronomers estimate the age
of the universe in two ways: 1) by
looking for the oldest stars; and 2) by measuring the rate
of expansion
of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin
of a bullet from the holes in a wall.
Rees's eligibility for the prize originates from his
looking at the «big questions»
of the universe from an
astronomer's stand - point.
A while back, I wrote a column for Discover analyzing your place in space:
astronomers» best
look yet at where you fit into the big, crazy, cosmic scheme
of things.
By then, X-ray-detecting goggles may enable an
astronomer, ambling home one evening, to
look skyward and see the death glow
of the same supernova Brahe observed in its infancy.
«The statistical significance is starting to
look pretty good,»
astronomer William Sparks
of the Space Telescope Science...
Astronomers, therefore,
look for signs
of reionization by determining when 21 - centimeter emissions start to turn off — evidence that stars are, simultaneously, starting to turn on.
Venus Express proved it would work:
Looking at one infrared wavelength allowed
astronomers to see hot spots that might be signs
of active volcanism (SN Online: 6/19/15).
«Makemake's moon proves that there are still wild things waiting to be discovered, even in places people have already
looked,» said Dr. Alex Parker, lead author
of the paper and the SwRI
astronomer credited with discovering the satellite.
Levan concludes: «Now,
astronomers won't just
look at the light from an object, as we've done for hundreds
of years, but also listen to it.
But in January,
astronomers used optical and infrared telescopes to
look back nearly to the beginning
of the universe, just 1.5 billion years after the Big Bang, where they saw newborn ellipticals — ancient galaxies so dusty they're nearly invisible.
Applying the same technique to other regions
of the Milky Way will help
astronomers figure out what our galaxy
looks like from the outside and compare it to other spiral galaxies.
Astronomers are now using a similar inference to solve the cosmic mystery
of a black hole's birth —
looking for stars that fail to explode.
He leads a team
of astronomers who have been using the Large Binocular Telescope (LBT) to
look for failed supernovae in other galaxies.
«The statistical significance is starting to
look pretty good,»
astronomer William Sparks
of the Space Telescope Science Institute in Baltimore says.
The cool star's composition is tricky to study, but
astronomers can
look at 16 other stars in the same «moving group», all
of which orbit the galaxy backwards and are very old.
«Ours isn't the only group
looking for planets around young stars, and my hope is that
astronomers can find enough
of them to shed light on some
of the nagging questions about planet formation,» Johns - Krull said.
The team also analyzed the radio waves in a new way, revealing that what
looked like individual bursts were actually composed
of many smaller sub-bursts, says
astronomer Andrew Seymour
of the Universities Space Research Association at Arecibo.
«
Astronomers can
look for signs
of this, but they don't see it.
To understand the current, mostly privately funded space race, University
of Arizona
astronomer Impey begins by
looking back.
«If Neanderthal man had had ultraviolet eyes and could
look above the atmosphere, he could have seen the beginning
of this tail forming,» says
astronomer and team leader Christopher Martin
of the California Institute
of Technology in Pasadena.
Regardless, if TESS can indeed locate hundreds
of nearby planets,
astronomers will have their hands full for the foreseeable future — finding out what those planets are like and what kinds
of habitats they might support and, just maybe, flinging some future probe toward one enticing -
looking world.
For more clues to the nature
of dark matter,
astronomers have
looked out beyond our neighboring galaxies, into deep stretches
of space where the influence
of the unseen material shows up in other, more dramatic ways.
A team led by
astronomer Dimitar Sasselov
of the Harvard - Smithsonian Center for Astrophysics in Cambridge, Massachusetts, used several large telescopes to scrutinize 59 candidate stars that OGLE singled out for a closer
look via subtle dips in their light outputs.
Astronomers have gotten the most detailed
look yet at the atmosphere
of a planet outside the solar system.
This high - resolution image
of Jupiter's moon Io was snapped last November 6 by the Galileo spacecraft, and it has given
astronomers their best
look at the most volcanically active object in the solar system since the Voyager flyby in 1979.
In 2012 and 2014 a team led by an
astronomer from Paris Observatory took a second
look at the auroras using the ultraviolet capabilities
of the Space Telescope Imaging Spectrograph (STIS) installed on Hubble.
In the past,
astronomers inferred the existence
of exoplanets and their gases by
looking for subtle changes in the light...
Most SETI projects tune in to the 1.42 to 1.72 - gigahertz range, reasoning that alien
astronomers might expect earthly scientists to be
looking there anyway as this is the frequency
of radiation emitted by interstellar hydrogen and hydroxyl clouds.
Astronomers hadn't found enough
of them to account for all the dark matter — but it turns out they were
looking for the wrong color star.
«Zwicky began referring to Baade as «the Nazi»... He regarded most
of the other Palomar
astronomers as fools, and Walter Baade as a cretin... He would swear torrentially at night assistants, using scientific terms laced with obscenities... He referred to Baade and the others as spherical bastards — «They are spherical,» he said, «because they are bastards every way I
look at them.»
These sources
of pollution could prevent
astronomers from getting a clear
look at the night sky, limiting the sensitivity and accuracy
of their measurements.
The
astronomers looked carefully at the possibility that instead
of indicating different ages, the different brightnesses and colours
of some
of the stars were due to hidden companion stars, which would make the stars appear brighter and redder than they really were.
Later this year,
astronomers will begin a new sky survey to
look for signs
of the stuff among exploding stars and ancient galaxy clusters.
Now, however,
astronomers know where to
look to reliably see at least one: a patch
of sky about one tenth the size
of the full moon in the direction
of the constellation Auriga.
Schaefer and a group
of other
astronomers will start out near Casper, Wyo., but they're ready to jump in the car and drive anywhere else along the eclipse path if it
looks like it might be cloudy.
«
Looking around the very nearest Sun - like stars is the next logical step in the search for another Earth,» says Supriya Chakrabarti, an
astronomer at the University
of Massachusetts, Lowell, who is developing planet - imaging technologies for Project Blue.
In general,
astronomers look for two hallmarks
of technology.
Not only does Rest's research provide that crucial close - up
look, but it also gives
astronomers a complete picture
of the explosion — something they can't get any other way.
The planet — Proxima b — was discovered by
astronomers who spent years
looking for signs
of the tiny gravitational tug exerted by a planet on its star, after spotting hints
of such disruption in 2013.
Using the most powerful radio telescope in the world, an international team
of astronomers has set out to
look for answers in the star L2 Puppis.
«Previously,
astronomers had been
looking at the aftermath
of short - period bursts largely in optical light, and were not really finding anything besides the light
of the gamma - ray burst itself,» explained Andrew Fruchter
of the Space Telescope Science Institute in Baltimore, Md., a member
of Tanvir's research team.
Despite their name, MACHOs need not occur only in the galactic halo, so
astronomers can search for them by
looking for microlensing effects anywhere where there are large numbers
of stars.
When Dutch
astronomer Willem de Sitter pointed out that one interpretation
of general relativity
looked awfully like an expanding universe, Einstein sought a flaw in his reasoning.
The
astronomers» goal is to finally reveal what our own Galaxy
looks like if we could leave it, travel outward perhaps a million light - years, and view it face - on, rather than along the plane
of its disk.
As improved telescope technology finds smaller and more distant asteroids,
astronomers have identified clusters
of similar -
looking bodies clumped in analogous orbits.
In a just - published paper,
astronomers used a sample
of 40,000 galaxies in the COSMOS field, a large and contiguous patch
of sky with deep enough data to
look at galaxies very far away, and with accurate distance measurements to individual galaxies.
What
looked at first like a sort
of upside - down planet has instead revealed a new method for studying binary star systems, discovered by a University
of Washington student
astronomer.