News tagged with astronomers

Black holes and star formation

(PhysOrg.com) -- It has long been recognized that galaxy mergers or even close interactions can play a vital role in shaping the morphology of galaxies. One way they can do so, it is thought, is by triggering ...

Space & Earth / Astronomy

created Feb 09, 2012 | popularity 4.1 / 5 (7) | comments 7 | with audio podcast

Distorting the lens

(PhysOrg.com) -- One of the most bizarre predictions of Einstein's Theory of General Relativity is the existence of back holes, objects that are so dense that not even light can escape from their gravitational ...

Space & Earth / Astronomy

created Feb 09, 2012 | popularity 5 / 5 (3) | comments 3

New images capture 'stealth merger' of dwarf galaxies

New images of a nearby dwarf galaxy have revealed a dense stream of stars in its outer regions, the remains of an even smaller companion galaxy in the process of merging with its host. The host galaxy, known ...

Space & Earth / Astronomy

created Feb 08, 2012 | popularity 4.3 / 5 (4) | comments 0 | with audio podcast

Chandra finds Milky Way's black hole grazing on asteroids

(PhysOrg.com) -- The giant black hole at the center of the Milky Way may be vaporizing and devouring asteroids, which could explain the frequent flares observed, according to astronomers using data from NASA's ...

Space & Earth / Astronomy

created Feb 08, 2012 | popularity 5 / 5 (7) | comments 13 | with audio podcast

Searching for a solid that flows like a liquid

(PhysOrg.com) -- A series of neutron scattering experiments at Oak Ridge National Laboratory and other research centers is exploring the key question about a long-sought quantum state of matter called supersolidity: ...

Physics / Quantum Physics

created Feb 03, 2012 | popularity 4.3 / 5 (7) | comments 16 | with audio podcast

Do black holes help stars form?

(PhysOrg.com) -- The center of just about every galaxy is thought to host a black hole, some with masses of thousands of millions of Suns and consequently strong gravitational pulls that disrupt material around ...

Space & Earth / Astronomy

created Feb 03, 2012 | popularity 4.5 / 5 (6) | comments 1 | with audio podcast

2012 BX34: Behind the scenes in the discovery of a near Earth asteroid

Several blockbuster movies, television shows and commercials have depicted the discovery of an asteroid heading towards Earth and usually, somehow, impending doom is averted. But how do the discoveries of ...

Space & Earth / Space Exploration

created Feb 02, 2012 | popularity 5 / 5 (2) | comments 0

Help astronomers measure the solar system

As the bright Mars-crossing asteroid 433 Eros makes its closest approach to Earth since 1975, astronomers around the globe are taking the opportunity to measure its position in the sky, thereby fine-tuning ...

Space & Earth / Space Exploration

created Feb 01, 2012 | popularity 5 / 5 (1) | comments 0

8-meter-wide asteroid will pass close to Earth today

A small asteroid will pass extremely close to Earth tomorrow (January 27, 2012). Named 2012 BX34, this 11 meter- (36 feet-) wide 8 meter- (26-foot-) space rock (astronomers have updated their estimates of the ...

Space & Earth / Space Exploration

created Jan 27, 2012 | popularity 5 / 5 (7) | comments 0

The wild early lives of today's most massive galaxies

(PhysOrg.com) -- Using the APEX telescope, a team of astronomers has found the strongest link so far between the most powerful bursts of star formation in the early Universe, and the most massive galaxies ...

Space & Earth / Astronomy

created Jan 25, 2012 | popularity 4.4 / 5 (5) | comments 2 | with audio podcast

Planets, planets everywhere: But researcher says finding life on these new discoveries is challenging

Recent discoveries have transformed scientific understanding of the galaxy, showing a Milky Way teeming with planets, some of them circling stars in bizarre configurations compared to the staid solar system, ...

Space & Earth / Space Exploration

created Jan 20, 2012 | popularity 4.8 / 5 (6) | comments 0

Earthly machine recreates star's sizzling-hot surface

Since we can't go to the stars yet, let's bring the stars to us. In a giant X-ray-producing facility, astronomers and plasma physicists have heated a cigar-sized sample of gas to over 17,000 degrees Fahrenheit ...

Space & Earth / Astronomy

created Jan 13, 2012 | popularity 4.1 / 5 (10) | comments 1 | with audio podcast

New map of the universe reveals its history for the past six-billion years

The scientists of the Sloan Digital Sky Survey (SDSS), including astronomers at Penn State, have produced a new map of the universe that is in full color, covers more than one quarter of the entire sky, and ...

Space & Earth / Astronomy

created Jan 13, 2012 | popularity 4.6 / 5 (9) | comments 19 | with audio podcast

Binary star system found by following gamma-ray signal

(PhysOrg.com) -- To find a binary star system, which is where two stars are in close proximity to one another, astronomers have traditionally relied on pure luck. They’d first start studying what would look like a single ...

Space & Earth / Astronomy

created Jan 13, 2012 | popularity 5 / 5 (3) | comments 0 | with audio podcast report

Discovery of three smallest exoplanets: The Barnard's star connection

The discovery of the three smallest planets yet orbiting a distant star, which was announced today at the annual meeting of the American Astronomical Society, has an unusual connection to Barnard's star, one ...

Space & Earth / Astronomy

created Jan 11, 2012 | popularity 5 / 5 (7) | comments 1 | 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 , telescope