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This is an activity about detecting elements by using light. Learners will develop and apply methods to identify and interpret patterns to the identification of fingerprints. They look at fingerprints of their classmates, snowflakes, and finally... (View More)

This Hubble Space Telescope image shows an especially photogenic group of interacting galaxies called Arp 273. The larger of the spiral galaxies, also known as UGC 1810, has a disk that is distorted into a rose-like shape by the gravitational tidal... (View More)

Audience: High school, Informal education
Materials Cost: Free

This is a website about gravitational waves. Learners will read about how the Laser Interferometer Space Antenna (LISA) mission will detect gravitational waves.

This collection features images taken by the Chandra X-ray Observatory, including image descriptions and comparison with optical images. Search options include chronological listings, images by category, and images by interest such as... (View More)

Audience: Informal education
Materials Cost: Free

This Hubble Space Telescope image shows what appears to be a delicate bubble of gas floating serenely in space. In actuality, the bubble is the visible remnant of a powerful supernova explosion called SNR 0509. The bubble was formed from gas being... (View More)

This website presents basic information and concepts about Cosmology and our current best understanding of the Universe. Cosmology is the scientific study of the large scale properties of the Universe as a whole. It endeavors to use the scientific... (View More)

This is a lesson about visual spectra. Learners will explore different ways of displaying visual spectra, including colored "barcode" spectra, like those produced by a diffraction grating, and line plots displaying intensity versus color, or... (View More)

This Hubble Space Telescope image captures thousands of sparkling young stars nestled within the star-forming nebula NGC 3603. This stellar "jewel box" is one of the most massive young star clusters in the Milky Way Galaxy. The image and text... (View More)

Learners will build an open spectrograph to calculate the angle the light is transmitted through a holographic diffraction grating. After finding the desired angles, the students will design their own spectrograph using the information learned. The... (View More)

In this lesson, students consider observations and inferences to determine the support for each of two theories on the origin of the universe: Steady State and Big Bang. Working with partners, students draw from a set of Evidence cards (master... (View More)