Cornell University
Cornell University: Astronomy: Frequently Asked Questions
Definintions for pulsars, millisecond pulsars, the evolution of pulsars, neutron stars and "Black Widows." Features related links.
NASA
Nasa: Imagine the Universe: Neutron Stars and Pulsars
Discover what neutron stars and pulsars are and view pictures of them. Includes links to additional resources and lesson plans.
NASA
Nasa: Imagine the Universe: Pulsars
Resource explores what a pulsar is, as well as what is currently known about this phenomenon. Content includes a focus on x-ray observations of pulsars, and gamma-ray pulsars.
NASA
Nasa: Astronomy Picture of the Day: Crab Nebula and Geminga in Gamma Rays
Explains that pulsars would be the brightest objects in the sky if we could see gamma-rays.
Other
American Institute Physics: Quark Stars
Collapsed stars, between white dwarfs and black holes, can be studied as quark-gluon masses, or quark-hyperon groups. Extreme pressures lead to extreme states.
Curated OER
Science Kids: Science Images: Neutron Star
A Hubble Space Telescope photo of a rapidly spinning neutron star, also known as a pulsar.
NASA
Nasa: Imagine the Universe: Welcome to the World of X Ray Astronomy
Site recounts how X-rays were discovered as well as who discovered them. Offers graphics, links to facts on this topic, a quiz, and teacher resources.