What is Diffuse Large B-Cell Lymphoma. Diffuse large B-cell lymphoma is a cancer that starts in white blood cells called lymphocytes. It is also called DLBCL. It usually grows in lymph nodes -- the pea-sized glands in your neck, groin, armpits, and elsewhere that are part of your immune system.
Can you please give me the definitions of homogeneity and isotropy in astronomy terms? This is a good question, because these concepts are a bit subtle. Homogeneous is defined as the same in all locations while isotropic means the same in all directions. Imagine that the whole universe is an infinitely large field with one perfectly symmetrical hill, which you are seated atop. Look around: you see an isotropic universe, since the hill is equally green and equally steep in all directions. But the universe is not homogeneous: it has a hill! These concepts are important because most modern cosmology is based on the cosmological principle, the assumption that, on large scales, the universe is both homogeneous and isotropic.
Astronomy and celestial mechanics. 1  In astronomy, an anomaly of an elliptical orbit, generally measured with respect to an apsis, usually the periapsis. 2  Eccentric anomaly, an intermediate value used to compute the position of a celestial object as a function of time. Flyby anomaly, an unexpected energy increase during the flybys of the Earth by various satellites. Mean anomaly, a measure of time in the study of orbital dynamics.