Then, the process of becoming pregnant takes several days -- the fertilized egg (now called a blastocyst) has only just begun its long journey. Once the egg is fertilized, it now has to travel all the way up into the uterus for implantation to take place. As the blastocyst makes this journey, it will continue to grow in size. At the same time, its cells will continue to divide and reproduce.
gravitational field - a field of force surrounding a body of finite mass. field of force, force field, field - the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it.
Magnetic Field: This refers to an area encompassing a magnet or electric current which has the ability to attract or repel certain objects anywhere within the field. Magnetic Field (Earth's): The Earth's magnetic field is aligned with the north and south poles, and has reversed many times during geologic history.