Astronomy is a science that studies celestial objects such as the Sun, planets, moons, stars, nebulae & galaxies.
Definition of Ebola - an infectious and frequently fatal disease marked by fever and severe internal bleeding, spread through contact with infected body Definition of Ebola - an infectious and frequently fatal disease marked by fever and severe internal bleeding, spread through contact with infected body
Ebola hemorrhagic fever (Ebola virus disease) facts. Ebola hemorrhagic fever is a disease caused by four different strains of Ebola virus; these viruses infect humans and nonhuman primates. It is also referred to as Ebola virus disease. Compared to most illnesses, Ebola hemorrhagic fever has a relatively short history since it was only discovered in 1976.