Suggested Searches

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

The Origin of Elements

Explanation: The hydrogen in your body, present in every molecule of water, came from the Big Bang . There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen . Much of the iron in your body was made during supernova s of stars that occurred long ago and far away. The gold in your jewelry was likely made from neutron stars during collisions that may have been visible as short-duration gamma-ray bursts or gravitational wave events . Elements like phosphorus and copper are present in our bodies in only small amounts but are essential to the functioning of all known life . The featured periodic table is color coded to indicate humanity 's best guess as to the nuclear origin of all known elements. The sites of nuclear creation of some elements , such as copper , are not really well known and are continuing topics of observational and computational research.

Almost Hyperspace: Random APOD Generator

Date August 9, 2020
Credit Image Credit & License: Wikipedia : Cmglee ; Data: Jennifer Johnson ( OSU )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.