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
So what is Ebola, and how does the deadly disease spread? First discovered in 1976, the virus has periodically spread through parts of Africa, killing thousands in the process. There is currently no vaccine, and due to its fast onset and horrific symptoms it has become one of the world's most feared diseases.