The clotting process is encouraged by certain blood particles (platelets and plasma proteins). Hemophilia occurs when you have a deficiency in one of these clotting factors. Hemophilia is inherited. However, about 30 percent of people with hemophilia have no family history of the disorder.
A rendering of the magnetic field lines of Earth's magnetosphere. A magnetosphere is the region of space surrounding an astronomical object in which charged particles are controlled by that object's magnetic field. Near the surface of many astronomical objects, the magnetic field resembles that of a dipole.
1 The ionosphere is a region of the atmosphere that is ionized by solar radiation. 2  It is responsible for auroras. 3  During daytime hours, it stretches from 50 to 1,000 km (31 to 621 mi; 160,000 to 3,280,000 ft) and includes the mesosphere, thermosphere, and parts of the exosphere. The ionosphere is a region of the atmosphere that is ionized by solar radiation. 2  It is responsible for auroras. 3  During daytime hours, it stretches from 50 to 1,000 km (31 to 621 mi; 160,000 to 3,280,000 ft) and includes the mesosphere, thermosphere, and parts of the exosphere.