astronomy & astrophysics
April 2, 2018
Earth’s stable temperature past suggests other planets could also sustain life
Earth has had moderate temperatures throughout its early history, and neutral seawater acidity. This means other rocky planets could likely also maintain this equilibrium and allow life to evolve.
March 29, 2018
Stellar break-up likely behind ‘runaway’ star’s fast pace, researcher says
During a recent survey of supermassive stars, an international team of astronomers discovered a star that is in quite a hurry. As they report in a new paper, the team tracked one yellow supergiant star cruising along at about 300,000 miles per hour, a velocity that would get you from the Earth to the Moon in about 48 minutes.
February 5, 2018
Watery worlds: UW astronomer Eric Agol assists in new findings of TRAPPIST-1 planetary system
A team of astronomers including Eric Agol of the University of Washington has found that the seven Earth-sized planets orbiting the star TRAPPIST-1 are all made mostly of rock, and some could even have more water — which can give life a chance — than Earth itself. The research was led by Simon Grimm of…
January 24, 2018
A new ‘atmospheric disequilibrium’ could help detect life on other planets
A University of Washington study has found a simple approach to look for life that might be more promising than just looking for oxygen.
January 3, 2018
Space dust, not aliens: Two UW astronomers assist in new research on ‘mysterious’ star
UW astronomers Brett Morris and James Davenport assisted in new research on “Tabby’s Star,” named for Louisiana State University astronomer Tabetha Boyajian.
November 30, 2017
Giant black hole pair photobombs Andromeda Galaxy
A cosmic photobomb found as a background object in images of the nearby Andromeda galaxy has revealed what could be the most tightly coupled pair of supermassive black holes ever seen.
November 14, 2017
With launch of new night sky survey, UW researchers ready for era of ‘big data’ astronomy
The first astronomers had a limited toolkit: their eyes. They could only observe those stars, planets and celestial events bright enough to pick up unassisted. But today’s astronomers use increasingly sensitive and sophisticated instruments to view and track a bevy of cosmic wonders, including objects and events that were too dim or distant for their…
October 16, 2017
UW researchers mark first detection of gravitational waves from collision of two neutron stars
For the first time, scientists have detected gravitational waves from the merger of two neutron stars.
July 24, 2017
Dark matter is likely ‘cold,’ not ‘fuzzy,’ scientists report after new simulations
Scientists have used data from the intergalactic medium — the vast, largely empty space between galaxies — to narrow down what dark matter could be.
May 22, 2017
Kepler telescope spies details of TRAPPIST-1 system’s outermost planet
A University of Washington-led international team of astronomers has used data gathered by the Kepler Space Telescope to observe and confirm details of the outermost of seven exoplanets orbiting the star TRAPPIST-1.
May 17, 2017
Visiting astronomer at UW part of ‘Styrofoam’ planet discovery
David James, a visiting scientist with the UW Department of Astronomy, assisted in the just-announced Lehigh University-led discovery of an exoplanet 320 light-years away with a density so light it is being called a “Styrofoam planet.”
February 22, 2017
UW astronomer Eric Agol assists in new seven-planet NASA discovery using ‘distracted driving’ technique
UW astronomy professor Eric Agol is part of the large team of researchers that has just announced confirmation of several Earth-sized, potentially habitable planets orbiting a star about 40 light-years away.
February 15, 2017
Early Earth as exoplanet: NASA highlights just-published UW Virtual Planetary Laboratory research
Recently published research from the UW’s Virtual Planetary Laboratory (VPL) using ancient Earth as a stand-in for hypothetically habitable exoplanets has been highlighted by NASA in a feature article. Leading the research was Giada Arney, who was a UW astronomy doctoral student when doing the work and is now with NASA’s Goddard Spaceflight Center.
August 29, 2016
New discovery Proxima b is in host star’s habitable zone — but could it really be habitable?
The world’s attention is now on Proxima Centauri b, a possibly Earth-like planet about 4.22 light-years away. It’s in its star’s habitable zone — but could it in fact be habitable? If so, the planet evolved very different than Earth, say researchers at the University of Washington-based Virtual Planetary Laboratory.
February 12, 2016
Caught in the act: UW astronomers find a rare supernova ‘impostor’ in a nearby galaxy
UW astronomers Breanna Binder and Ben Williams have identified a rare type of ‘supernova impostor’ in a nearby galaxy, with implications for how scientists look at the short, complex lives of massive stars.
February 11, 2016
Gravitational waves detected 100 years after Einstein’s prediction
For the first time, scientists have observed ripples in the fabric of spacetime called gravitational waves, arriving at the Earth from a cataclysmic event in the distant universe. This confirms a major prediction of Albert Einstein’s 1915 general theory of relativity and opens an unprecedented new window onto the cosmos.
January 8, 2016
Quiet quasar has apparently eaten its fill
Astronomers with the Sloan Digital Sky Survey (SDSS) announced that a distant quasar ran out of gas. Their conclusions, reported Jan. 8 at the American Astronomical Society meeting in Kissimmee, Florida, clarify why quasar SDSS J1011+5442 changed so dramatically in the handful of years between observations.
October 29, 2015
UW scientists are the first to simulate 3-D exotic clouds on an exoplanet
A nearby exoplanet has an atmosphere that might be similar to Earth’s before life evolved. In an attempt to simulate the structure of this exoplanet’s atmosphere, UW researchers became the first to simulate three-dimensional exotic clouds on another world.
July 23, 2015
UW astronomer, students report irregularities in ‘rare, exotic’ binary system
UW astronomers were recently reminded that the diplomatic axiom to “trust, but verify” also applies to scientific inquiry when they analyzed fresh data from a distant galaxy. As they reported in July in the Monthly Notices of the Royal Astronomical Society, a puzzling stellar phenomenon may not be what other astronomers had reported. They studied…
July 6, 2015
In a cosmic ‘call to arms,’ UW astronomer proposes new deep-space telescope to scan the sky for signs of life
On July 6, a team of astronomers proposed a new type of mission to crack some of the universe’s most intriguing mysteries and search for life on distant worlds.
June 23, 2015
Visualizing the cosmos: UW astronomer Andrew Connolly and the promise of big data
A conversation with UW astronomer Andrew Connolly on the coming Large Synoptic Survey Telescope and the promise of big data to the study of the universe.
June 22, 2015
Spectrum of life: Nonphotosynthetic pigments could be biosignatures of life on other worlds
To find life in the universe, it helps to know what it might look like. If there are organisms on other planets that do not rely wholly on photosynthesis — as some on Earth do not — how might those worlds appear from light-years away?
June 8, 2015
Atmospheric signs of volcanic activity could aid search for life
Planets with volcanic activity are considered better candidates for life than worlds without such heated internal goings-on.
Now, graduate students at the UW have found a way to detect volcanic activity in the atmospheres of faraway planets when they transit, or pass in front of their host stars.
April 13, 2015
Violent methane storms on Titan may solve dune direction mystery
Titan, Saturn’s largest moon, has a hazy atmosphere and surface rivers, mountains, lakes and sand dunes. But the dunes and prevailing surface winds don’t point in the same direction. New research from UW astronomer Benjamin Charnay may have solved this mystery.
December 2, 2014
‘Mirage Earth’ exoplanets may have burned away chances for life
Planets orbiting close to low-mass stars are prime targets in the search for life. But new research led by an astronomy graduate student at the UW indicates some such planets may have long since lost their chance at hosting life because of intense heat during their formative years.
August 14, 2014
Stardust sample analysis finds likely interstellar dust
The Stardust mission, the brainchild of a UW astronomer, enlisted help from thousands of citizen scientists to find likely evidence of interstellar dust.
July 31, 2014
Companion planets can increase old worlds’ chance at life
Having a companion in old age is good for people — and, it turns out, might extend the chance for life on certain Earth-sized planets in the cosmos as well.
July 18, 2014
Sloan Digital Sky Survey — including UW — now to view entire sky
The Sloan Digital Sky Survey, a consortium of institutions of which the University of Washington is part, will soon expand its view to see the entire sky, and even peer into the Milky Way’s galactic center.
April 21, 2014
‘Upside-down planet’ reveals new method for studying binary star systems
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 UW student astronomer.
April 15, 2014
Astronomers: ‘Tilt-a-worlds’ could harbor life
A fluctuating tilt in a planet’s orbit does not preclude the possibility of life, according to new research by astronomers at the University of Washington, Utah’s Weber State University and NASA. In fact, sometimes it helps.
March 4, 2014
‘Dimer molecules’ aid study of exoplanet pressure, hunt for life
UW astronomers have developed a new method of gauging the atmospheric pressure of exoplanets, or worlds beyond the solar system, by looking for a certain type of molecule. And if there is life out in space, it may one day be revealed by this method.
March 3, 2014
UW astronomer Eric Agol’s seven-planet system part of major NASA discovery
UW astronomer Eric Agol played a key role in the windfall of 715 new exoplanets recently announced by NASA. Agol was on a team that found seven of those worlds, all in orbit around the same star.
January 8, 2014
Astronomers measure far-off galaxies to 1 percent precision
University of Washington astronomers and colleagues have measured the distance to galaxies six billion light-years away — about halfway back to the Big Bang — to an accuracy of just 1 percent.
December 9, 2013
Astronomers solve temperature mystery of planetary atmospheres
An atmospheric peculiarity the Earth shares with Jupiter, Saturn, Uranus and Neptune is likely common to billions of planets, University of Washington astronomers have found, and knowing that may help in the search for potentially habitable worlds.
November 25, 2013
Study: Greenhouse gas might have warmed early Mars enough to allow liquid water
The mystery of how the surface of Mars, long dead and dry, could have flowed with water billions of years ago may have been solved by research that included a University of Washington astronomer.
November 6, 2013
A shot in the dark: Detector at UW on the hunt for dark matter
Physicists are using a detector at the UW to search for a particle called an axion, which would be the first physical evidence of the universe’s dark matter.
July 29, 2013
Planetary ‘runaway greenhouse’ more easily triggered, research shows
It might be easier than previously thought for a planet to overheat into the uninhabitable “runaway greenhouse” stage, according to new research.
July 18, 2013
A warmer planetary haven around cool stars, as ice warms rather than cools
In a bit of cosmic irony, planets orbiting cooler stars may be more likely to remain ice-free than planets around hotter stars. This is due to the interaction of a star’s light with ice and snow on the planet’s surface.
April 25, 2013
Astronomer studies far-off worlds through ‘characterization by proxy’
A UW astronomer is using Earth’s interstellar neighbors to learn the nature of certain stars too far away to be directly measured or observed, and the planets they may host.
April 18, 2013
Astronomers discover five-planet system with most Earth-like exoplanet yet
A University of Washington astronomer has discovered perhaps the most Earth-like planet yet found outside the solar system by the Kepler Space Telescope.
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