Aurora Borealis – A complete guide to the phenomenon. Physical analysis of atmospheric color generation, solar wind impact, and a photo gallery from Iceland documenting various auroral forms.
is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from Earth in the constellation Ursa Major. M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 100,000 light years. It has around a trillion stars, twice the number in the Milky Way.
Double Cluster Perseus: A study of the Double Cluster. Explaining the presence of red supergiants in the Perseus OB1 association and analyzing the system’s kinematics (blueshift).
A study of the star Albireo (β Cygni). Explaining color contrast based on surface temperature. Discussion of the latest astrometric data (Gaia) challenging the physical connection between the components.
M81 and M82 – Two galaxies, one story. How M81 deformed M82, triggering violent star formation processes (Starburst). Astrophysical analysis of the most famous pair in Ursa Major and the IFN dust challenge.
All content on this site is subject to legal protection under the provisions of the Act of February 4, 1994 on Copyright and Related Rights (consolidated text of 2006, gov. Journal of Laws No. 90, item 631, as amended). ). Without the author’s consent, it is forbidden, among others content reproduction, copying, reprinting, storage and processing by any electronic means, in whole or in part.
Further dissemination referred to in art. 25 paragraph 1 point b of the Act of 4 February 1994 on copyright and related rights. Copying, processing, distributing these materials in whole or in part without the author’s consent is prohibited.