Sentences with phrase «when astronomers»

I was fortunate to participate in a 2010 workshop assessing what kinds of protocols should be developed to coordinate international responses when astronomers finally identify an object that will hit Earth.

It seems almost silly in some ways, and to some Dot Earth readers borderline irresponsible, to spend time focusing on the day when astronomers spot a rock the size of, say, a hockey rink — or if we're less lucky a city block — slinging around the Sun in an orbit and on a timetable that could cause it to smash into Earth.

It was found when astronomers used special computer software to subtract the light of the galaxy in the Deep Field images taken two years apart (Riess et al, 2001; Gilliland et al, 1999; and Gilliland and Phillips, 1998).

So it came as a surprise when astronomers discovered in 1998 that the universe is expanding faster and faster, not ever more slowly.

Hubble's fine resolution — the ability to see tiny details — helped propel the case for supermassive black holes even further in 1994, when astronomers took spectra of the gas in the center of the elliptical galaxy M87.

(Inside Science)-- When the astronomers first saw the supernova in 2014, it looked like a standard explosion that often signifies the death of a massive star.

When astronomers graph the light data, a careful look at the gradual dimming of starlight shown in the occultation light curve reveals a «slight bend,» or «kink.»

When astronomers look into the deepest reaches of the universe with powerful telescopes, they see myriads of galaxies.

«Typically, when astronomers see gaps like this in a debris disk, they suspect that a planet has cleared the path.

Although he was correct, his research was ignored by other astronomers until the 1970's when astronomers began to realise that most of the matter in the universe must be of a dark, unseen type.

When astronomers began measuring the rotations of spiral galaxies in the 1950s and»60s, they made a puzzling discovery.

When astronomers are granted time on Hubble, their program is assigned to a program coordinator to make sure the observations are feasible and schedulable on the telescope.

When astronomers Margaret Geller and Emilio E. Falco plotted the positions of galaxies and galactic clusters in the universe, it became clear that galactic clusters and superclusters are not randomly distributed.

Only when all astronomers feel welcome and supported in the profession can our discipline realize its full potential for excellence.

When astronomers study the Milky Way, they can learn about the birth, life and death of its stars because they see the stars at various evolutionary stages.

When astronomers first discovered «Oumuamua on October 19, the asteroid had already made its closest approach to the Sun, and was racing towards the outer reaches of the Solar System.

When astronomers sent Rosetta to the ancient icy object, the spacecraft's mission was to understand the comet's composition so scientists could, ultimately, use it as a time capsule to see what the early solar system looked like.

When the astronomers compared their new VLA measurements of the motion of SiO molecules close to the young star with earlier measurements of other molecules farther away from the protostar, they realized the two were orbiting the star in opposite directions.

«When astronomers go observing at night with telescopes, they say «clear skies» to mean good luck,» Jonathan Fraine of the University of Maryland, and the study's lead author, said in a statement.

During the 56 hours in June of 1999 when the astronomers were observing, Scorpius X-1 cooperated by being very active.

The paper suggests that when astronomers are looking for these giant exoplanets, they should concentrate on looking at young star systems that have debris disks around them.

It's a magical moment when astronomers, astrophysicists, string theorists, particle experimentalists and cosmologists get together because they all have a common purpose.

When astronomers estimate stellar distances for objects that are relatively close to Earth, they use a method called parallax.

When astronomers went back and looked at archival data, they were astonished to find evidence of an explosion in 1954 at the same location.

Kepler had a voluminous announcement in February 2014, when astronomers unveiled 715 new worlds confirmed in one go.

That's when astronomers realized they were looking at remnants of the same supernova that had been documented in ancient China [source: Zielinski].

But spiral arms emerged when astronomers incorporated ultraviolet and deep optical data (middle).

signal: The search for extraterrestrial intelligence got a brief boost in July when astronomers in Puerto Rico announced they had spotted a strange signal coming from a star known as Ross 128.

When astronomers announced the discovery of seven Earth - sized planets orbiting the ultracool dwarf star TRAPPIST - 1, Earthlings immediately celebrated the possibility that one of those planetary neighbors could host life.

McGrath, the Butler University professor who studies religion and science fiction, said Smith's cosmology has to be understood through the prism of his times, when astronomers, armed with ever bigger telescopes, explored deeper into the solar system than they ever had before.

When astronomers carefully subtract all known gamma - ray sources from LAT observations of the galactic center, a patch of leftover emission remains.

This intriguing idea received a boost in 2003, when astronomers detected methane in the Martian atmosphere.

It made a splash in August when astronomers reported that it hosts an Earth - mass planet where temperatures might be right for liquid water.

In 1978, when astronomers discovered Charon, they used the moon's orbital motion to find that the total mass of Pluto and Charon is 1 / 400th that of the Earth.

The planets made a splash in 1992, when astronomers announced them as the first extrasolar planets.

To predict when astronomers might find the first planet similar in size to Earth that also orbits far enough from its star to boast liquid water, the team scoured the discovery records of 370 exoplanets.

When astronomers aimed the 66 radio antennas of the Atacama Large Millimeter / submillimeter Array in Chile at the star HL Tauri, 450 light years away, they saw concentric rings around it — the first such sighting for any star.

The first and most celebrated confirmation of this theory came in 1919, when astronomers established that the mass of the sun causes a beam of light to curve, as Einstein had predicted.

That all changed in 1995, when astronomers began using large - format digital cameras to photograph huge swaths of sky in a single exposure.

And when the astronomers analyzed its chemical composition, the match was uncanny.

So 11 years ago, when astronomers suddenly realized that the universe was not merely expanding but accelerating in its expansion, most of them concluded that some otherwise undetectable antigravity force, a «dark energy,» was shoving apart galaxies.

Scientists around the world were reconnecting after the horrors of World War I, and general relativity had recently received stunning experimental confirmation when astronomers observed the sun's gravity bending starlight during a solar eclipse.

When astronomers record a single spectrum for the wholegalaxy, the iron line is smeared in both directions by this Dopplereffect.

Dark matter was first predicted 75 years ago, when astronomers noticed that the Milky Way's stars moved faster than they should given the galaxy's mass.

When astronomers scale up to the number of supernovae they expect to be taking place throughout the entire universe they reach a mind - boggling number: thousands of exploding stars every hour.

Comets whizzing beyond our solar system made a big splash last year when astronomers discovered that they could be as common as alien planets.

And last year, when astronomers trained the Hubble Space Telescope on some of these dying stars, the images they got back revealed a process that was far more complex and subtle than anyone had imagined.

Likewise, when astronomers announced that they had found six new planets orbiting distant suns earlier this month, the real value of the discoveries lay in the possibility of understanding the mechanics of planet formation in ways that would have been impossible a mere five years ago.

The first hint of the kamikaze asteroids came about 40 years ago, when astronomers discovered heavy elements such as magnesium in the spectra of some white dwarf stars.

Einstein had become famous when astronomers tested a key prediction of the theory concerning the bending of light as it passed by a massive object, such as the sun.