But, the 2013 flyby is by far the closest the asteroid will approach our planet for many decades. The next notable close approach to Earth will be on February 15, 2046, when the asteroid will pass no closer than 620,000 miles (1,000,000 kilometers) from the center-point of Earth.
ankylosing spondylitis. Description. Ankylosing spondylitis is a form of ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine. This condition is characterized by back pain and stiffness that typically appear in adolescence or early adulthood.
Doctors know a lot about how ankylosing spondylitis develops and leads to symptoms, but are still trying to understand what causes the disease. The symptoms of ankylosing spondylitis are caused by inflammation of parts of the lower spine. This inflammation can lead to damage and fusion - through the growth of new bone.