News tagged with astronomers

Serious blow to dark matter theories? New study finds mysterious lack of dark matter in Sun's neighborhood

(Phys.org) -- The most accurate study so far of the motions of stars in the Milky Way has found no evidence for dark matter in a large volume around the Sun. According to widely accepted theories, the solar ...

Space & Earth / Astronomy

created Apr 18, 2012 | popularity 4.6 / 5 (45) | comments 164 | with audio podcast

Earth’s other moons

(PhysOrg.com) -- Earth usually has more than one moon, according to a team of astronomers from the University of Helsinki, the Paris Observatory and the University of Hawaii at Manoa.

Space & Earth / Space Exploration

created Apr 04, 2012 | popularity 4.6 / 5 (34) | comments 19 | with audio podcast

Kepler spacecraft discovers 'invisible world'

Usually, running five minutes late is a bad thing since you might lose your dinner reservation or miss out on tickets to the latest show. But when a planet runs five minutes late, astronomers get excited because ...

Space & Earth / Astronomy

created Sep 08, 2011 | popularity 4.9 / 5 (32) | comments 5 | with audio podcast

What's down with the Sun? Major drop in solar activity predicted

(PhysOrg.com) -- A missing jet stream, fading spots, and slower activity near the poles say that our Sun is heading for a rest period even as it is acting up for the first time in years, according to scientists ...

Space & Earth / Space Exploration

created Jun 14, 2011 | popularity 5 / 5 (28) | comments 114 | with audio podcast

Cosmic thread that binds us revealed

(PhysOrg.com) -- Astronomers at The Australian National University have found evidence for the textile that forms the fabric of the Universe.

Space & Earth / Astronomy

created Sep 29, 2011 | popularity 4.7 / 5 (27) | comments 28 | with audio podcast

Dark matter core defies explanation

(PhysOrg.com) -- Astronomers using data from NASA's Hubble Telescope have observed what appears to be a clump of dark matter left behind from a wreck between massive clusters of galaxies. The result could ...

Space & Earth / Astronomy

created Mar 02, 2012 | popularity 4.9 / 5 (25) | comments 87 | with audio podcast

Astronomers discover biggest black holes ever (Update)

University of California, Berkeley, astronomers have discovered the largest black holes to date two monsters with masses equivalent to 10 billion suns that are threatening to consume anything, even light, ...

Space & Earth / Astronomy

created Dec 05, 2011 | popularity 4.8 / 5 (24) | comments 22 | with audio podcast

New planet discovered in Trinary star system

Until recently, astronomers were highly skeptical of whether or not planets should be possible in multiple star systems. It was expected that the constantly varying gravitational force would eventually tug ...

Space & Earth / Astronomy

created Jul 14, 2011 | popularity 4.7 / 5 (24) | comments 4 | with audio podcast

Neutron star blows away models for thermonuclear explosions

(PhysOrg.com) -- Amsterdam astronomers have discovered a neutron star that confounds existing models for thermonuclear explosions in such extreme objects. In the case of the accreting pulsar IGR J17480-2446, ...

Space & Earth / Astronomy

created Sep 14, 2011 | popularity 4.8 / 5 (23) | comments 74 | with audio podcast

Dwarf planet mysteries beckon to New Horizons

(PhysOrg.com) -- At this very moment one of the fastest spacecraft ever launched -- NASA's New Horizons -- is hurtling through the void at nearly one million miles per day. Launched in 2006, it has been in ...

Space & Earth / Space Exploration

created Sep 05, 2011 | popularity 5 / 5 (22) | comments 11 | with audio podcast

Quarter-mile-wide asteroid coming close to Earth

(AP) -- An asteroid bigger than an aircraft carrier will dart between the Earth and moon on Tuesday - the closest encounter by such a huge rock in 35 years.

Space & Earth / Space Exploration

created Nov 05, 2011 | popularity 4.6 / 5 (22) | comments 225

Researchers say galaxy may swarm with 'nomad planets'

(PhysOrg.com) -- Our galaxy may be awash in homeless planets, wandering through space instead of orbiting a star.

Space & Earth / Astronomy

created Feb 23, 2012 | popularity 4.3 / 5 (23) | comments 31 | with audio podcast

A star is torn

A University of Sydney researcher was part of an international team of astronomers that has observed an incredibly rare event that occurs once every 10,000 years per galaxy.

Space & Earth / Astronomy

created Aug 08, 2011 | popularity 4.6 / 5 (21) | comments 1 | with audio podcast

A black hole unmasked

Black holes are among the most amazing and bizarre predictions of Einstein's theory of gravity. A black hole is thought to be point-like in dimension, but it is surrounded by an imaginary surface, or "edge," ...

Space & Earth / Astronomy

created Nov 29, 2011 | popularity 4.7 / 5 (19) | comments 26 | with audio podcast

Earliest watery black hole discovered

Water really is everywhere. Two teams of astronomers, each led by scientists at the California Institute of Technology (Caltech), have discovered the largest and farthest reservoir of water ever detected in ...

Space & Earth / Astronomy

created Jul 22, 2011 | popularity 4.9 / 5 (18) | comments 44 | with audio podcast

Astronomer

An astronomer is a scientist who studies celestial bodies such as planets, stars, and galaxies.

Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using physical laws. Today, that distinction has mostly disappeared. Professional astronomers are highly educated individuals who typically have a PhD in physics or astronomy and are employed by research institutions or universities. They spend the majority of their time working on research, although they quite often have other duties such as teaching, building instruments, or aiding in the operation of an observatory. The number of professional astronomers in the United States is actually quite small. The American Astronomical Society, which is the major organization of professional astronomers in North America, has approximately 7,000 members. This number includes scientists from other fields such as physics, geology, and engineering, whose research interests are closely related to astronomy. The International Astronomical Union comprises almost 9,500 members from 87 different countries who are involved in astronomical research at the PhD level and beyond.

While the number of professional astronomers worldwide is not much larger than the population of a small town, there is a huge community of amateur astronomers. Most cities have amateur astronomy clubs that meet on a regular basis and often host star parties in their communities. The Astronomical Society of the Pacific is the largest general astronomical society in the world, comprising both professional and amateur astronomers as well as educators from 70 different nations. Like any hobby, most people who think of themselves as amateur astronomers may devote a few hours a month to stargazing and reading the latest developments in research. However, amateurs span the range from so-called "armchair astronomers" to the very ambitious, who own science-grade telescopes and instruments with which they are able to make their own discoveries and assist professional astronomers in research.

For more information about Astronomer, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.

Related topics: galaxies , stars , black holes , milky way , nasa