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Charts of the night-time sky, with links to corresponding Hubble images and descriptions of astronomical features. The construction of the Hubble telescope is explained.
Short article on the methods used by astronomers to measure stellar distances.
Gernerates a map of stars above any selected city or country. Updates every 10 seconds.
A great place to start astronomy or star gazing. This in-depth guide is meant for absolute beginners and will guide you through how to navigate your way around the night sky with several ideas for ...
Play with gravity in this fantastic simulator. Add stars and see how they move and orbit
A good page giving details of this astrophysicist.
An explanation of Doppler shift, which occurs when the light emitted by a moving star for example changes wavelength (known as redshift or blueshift).
An article from Physicsworld: Astronomers have spotted for the first time the fingerprint of uranium-138 in an ancient star - and have used it to make the most reliable guess yet of the age of the ...
This is the process which fuels the Sun and other stars which have core temperatures less than 15 million Kelvin. A reaction cycle yields about 15 MeV of energy.
Doppler studies of this blue supergiant in Cygnus indicate a period of 5.6 days in orbit around an unseen companion. The mass of the companion is calculated to be 8-10 solar masses, much too large to ...
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