Through an Hourglass Darkly

Article Abstract:

Radioactive isotopes are used to study the early history of our solar system. Astronomers compare accumulated daughter nuclides and parent radioactive species, and use these isotopes to try to understand how the solar system was formed. Despite advances in this area of study, understanding of the early solar system remains murky.

Author: Meyer, Bradley S.
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1999
Statistical Data Included, Solar system, Radioisotopes

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Stars are seen through a cloud, darkly, says a new theory

Article Abstract:

Laser spectroscopists have proposed an explanation for the diffuse interstellar bands (DIBs) that appear in the spectra of a cluster of stars. They believe the DIBs are caused by clouds of molecular hydrogen near the stars.

Author: Schechter, Bruce
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
Observations, Stars, Interstellar hydrogen

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Water on the sun: molecules everywhere

Article Abstract:

Research using a variational method of spectral analysis has confirmed earlier evidence of the existence of water on the surface of the sun. The water is found only in the central dark spots called sunspot umbrae.

Author: Oka, Takeshi
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1997
Spectrum analysis, Spectroscopy, Sun-spots, Sunspots, Spectrum, Solar, Solar spectrum

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Subjects list: Research, Spectra, Astronomical spectroscopy
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