Scales in the Universe

This is a tour developed by Professor Alyssa Goodman at Harvard University. This tour introduces cepheid variable stars and how the relationship between their pulsation periods and their luminosities has helped to estimate cosmic distances. Credits Alyssa...

A tour exploring what constellations are and why we can't see all of them at all times during the year.

Multiple Generations of Star Formation in the W5 region from Spitzer Space Telescope. Credits Lori Allen, Xavier Koenig, Sanjana Sharma

This tour discusses the history and significance of the Transit of Venus in front of the Sun, an event which allowed astronomers to determine the size scale of our solar system. Credits Jonathan Jackson, Harvard College

Amateur astronomers love to observe galaxies. Although you need a dark site, you can spot some galaxies even through small telescopes. This tour shows you seven of the sky's finest galaxies. Credits Michael Bakich, Astronomy Magazine

Explains how astronomers are able to detect extrasolar planets and some findings from the TrES project and the promise of the Kepler telescope. Narrated and produced by Sanjana Sharma. This tour has a nice animation sequence that shows how an orbiting...

This tour takes you on a journey that spans 25 orders of magnitude, beginning on Earth, looking at objects roughly one meter in size, and spanning the Universe to scales that are roughly 10 25 meters in size. The tour stops at several points and gives you...

A visit to Pluto using WWT's new 3D mode, showing some of the reasons why it was reclassified as a dwarf planet. Credits Dinoj Surendan

A tour of Sloan Digital Sky Survey objects, highlighting features in their spectra. Credits Mark SubbaRao, Adler Planetarium

Star and planet formation in the Orion Nebula as shown in images from the Hubble Space Telescope. Credits Frank Summers