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Dark Matter and Massive Galaxies

Submitted by idfive on
About eighty-five percent of the matter in the universe is in the form of dark matter, whose nature remains a mystery, and the rest is of the kind found in atoms. Dark matter exhibits gra...

The Radcliffe Wave

Submitted by idfive on
The Gould Belt is an expanding ring of young stars, gas and dust situated about a thousand light-years from the Sun - which is to say, in our solar neighborhood. It stretches over a few t...

A Submillimeter Survey of Protostars

Submitted by idfive on
The formation of stars involves the complex interactions of many phenomena, including gravitational collapse, magnetic fields, turbulence, stellar feedback, and cloud rotation. The balanc...

The Cosmic Confusion of the Microwave Background

Submitted by idfive on
Roughly 380,000 years after the big bang, about 13.7 billion years ago, matter (mostly hydrogen) cooled enough for neutral atoms to form, and light was able to traverse space freely. That...

X-Ray Detection of a Cepheid Binary

Submitted by idfive on
A Cepheid variable star is one whose particular mass and age (along with some of its other physical parameters) result in brightness oscillations with a precise period proportional to the...
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