Tuesday, 23 July, 2019

Day: September 24, 2013

Dark Matter in the Universe

Posted on Tuesday, 24 September, 2013Sunday, 20 August, 2017 by Zheluo Cai

Dark Matter in the Universe In 1933, Swiss astronomer Fritz Zwicky discovered that the visible matter contained in the galaxies of the vast Coma cluster is barely 10% of the amount needed to keep the galaxies bound together. This is the first indication that the universe has vast quantities of

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Netherlands - Level 2: Exercise Increased Caution Friday, 19 July, 2019
Exercise increased caution in the Netherlands due to terrorism. Terrorists continue plotting possible attacks in the Netherlands. Terrorists may attack with little or no warning, targeting tourist locations, transportation hubs, markets/shopping malls, local government facilities, hotels, clubs, restaurants, places of worship, parks, major sporting and cultural events, educational institutions, airports, and other public areas. Read […]