Wednesday, 20 November, 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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Watch - Dengue in Asia and the Pacific Islands Wednesday, 30 October, 2019
Dengue is a risk in many parts of Asia and the Pacific Islands. Some countries are reporting increased numbers of cases of the disease. Travelers to Asia and the Pacific Islands can protect themselves by preventing mosquito bites.
Alert - Ebola in Democratic Republic of the Congo Tuesday, 29 October, 2019
There is an outbreak of Ebola in the North Kivu (Kivu Nord) and Ituri provinces in the Democratic Republic of the Congo (DRC).

Djibouti - Level 1: Exercise Normal Precautions Monday, 18 November, 2019
Exercise normal precautions in Djibouti. Read the Safety and Security section on the country information page. If you decide to travel to Djibouti: Enroll in the Smart Traveler Enrollment Program (STEP) to receive Alerts and make it easier to locate you in an emergency. Follow the Department of State on Facebook and Twitter. Review the […]
Hong Kong - Level 2: Exercise Increased Caution Thursday, 14 November, 2019
Exercise increased caution in Hong Kong due to civil unrest. Country Summary: Since June 2019, large scale and smaller political demonstrations have taken place in various areas of Hong Kong, including MTR stations, shopping malls, universities, and at Hong Kong International airport. While many demonstrations have been peaceful, some have resulted in violent confrontations between protesters […]