Whois & Analysis for sci-news.com

Health physics is the applied physics of radiation protection for health and health care purposes.

It is the science concerned with the recognition, evaluation, and control of health hazards to permit the safe use and application of ionizing radiation.

Health physics professionals promote excellence in the science and practice of radiation protection and safety.

Health physicists principally work at facilities where radionuclides or other sources of ionizing radiation (such as X-ray generators) are used or produced; these include hospitals, government laboratories, academic and research institutions, nuclear power plants, regulatory agencies, and manufacturing plants.

Science News is an American bi-weekly magazine devoted to short articles about new scientific and technical developments, typically gleaned from recent scientific and technical journals.

Science News has been published since 1922 by Society for Science & the Public, a non-profit organization founded by E.

W.

Scripps in 1920.

American chemist Edwin Slosson served as the publication's first editor.

From 1922 to 1966, it was called Science News Letter.

The title was changed to Science News with the March 12, 1966 issue (vol.

89, no.

11).

Astronomy (from Greek: αστρονομία) is a natural science that studies celestial objects and phenomena.

It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution.

Objects of interest include planets, moons, stars, galaxies, and comets; while the phenomena include supernovae explosions, gamma ray bursts, and cosmic microwave background radiation.

More generally, all astronomical phenomena that originate outside Earth's atmosphere are within the purview of astronomy.

A related but distinct subject, physical cosmology, is concerned with the study of the Universe as a whole.

Space exploration is the ongoing discovery and exploration of celestial structures in outer space by means of continuously evolving and growing space technology.

While the study of space is carried out mainly by astronomers with telescopes, the physical exploration of space is conducted both by unmanned robotic space probes and human spaceflight.

Paleontology or palaeontology (or) is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch (roughly 11,700 years before present).

It includes the study of fossils to determine organisms' evolution and interactions with each other and their environments (their paleoecology).

Paleontological observations have been documented as far back as the 5th century BC.

The science became established in the 18th century as a result of Georges Cuvier's work on comparative anatomy, and developed rapidly in the 19th century.

The term itself originates from Greek παλαιός, palaios, i.e. "old, ancient", ὄν, on (gen.

ontos), i.e. "being, creature" and λόγος, logos, i.e. "speech, thought, study".