Sky and Telescope - April 2015 - 28

Browsing the Sky

WorldWide

Take a virtual and interactive tour of the universe.
What famous observatory has no lens and no mirror? In
centuries past, such primitive institutions could be found
worldwide, until the 17th century invention of the telescope
revolutionized the meaning of the word "observatory."
Now the modern age has its own version of an observatory sans telescope: the internet. The wealth of online astronomical data grows every day, drawing from spacecraft as
well as ground-based observatories around the globe. And
there's a portal through which anyone can access these data:
the WorldWide Telescope (WWT).

Alyssa Goodman
& Curtis Wong
28

April 2015 sky & telescope

This software runs on web browsers, on Windows as
a desktop application, or on other platforms altogether -
including planetariums across the country. WWT accesses
the amazing online treasure-trove to provide beautiful allsky imagery at dozens of wavelengths, as well as close-ups
of popular celestial targets. Users can find additional information on individual objects by following links to diverse
databases, ranging from Wikipedia to NASA's Astrophysics
Data System (the repository for most astronomical literature
published since the 1800s).
Basically, WWT functions as an interactive web browser
for the sky. And best of all, it's free.

A Virtual Observatory Is Born
One of astronomers' first uses of the internet was as a
remote-observing tool, enabling them to access telescopes



Sky and Telescope - April 2015

Table of Contents for the Digital Edition of Sky and Telescope - April 2015

Contents
Sky and Telescope - April 2015 - Cover1
Sky and Telescope - April 2015 - Cover2
Sky and Telescope - April 2015 - 3
Sky and Telescope - April 2015 - Contents
Sky and Telescope - April 2015 - 5
Sky and Telescope - April 2015 - A
Sky and Telescope - April 2015 - B
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Sky and Telescope - April 2015 - Cover3
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