+ Visit NASA.gov + Advanced Search   + About the Server   + Animation List   + How to Use the Server   + RSS Feeds Previous Animation Next Animation The Helium Atom Helium nuclei were created in the Big Bang and contain two protons and two neutrons each. Helium is the second most abundant element, comprising roughly one quarter of the mass of the Universe. This animation zooms into a standard helium atom, showing its protons (green), neutrons (white), and electrons (blue).    This animation zooms into a standard helium atom, showing its protons (green), its neutrons (white), and its electrons (blue). Duration: 10.0 seconds Available formats:   1280x720 (30 fps) QUICKTIME 5 MB   1280x720 (60 fps) MPEG-4   7 MB   1280x720   Frames   320x180     PNG           134 KB   160x80       PNG           45 KB   80x40         PNG           13 KB How to play our movies Animation Number: 10133 Animator: Dana Berry (Lead) Studio: NASA Completed: 2005-06-01 Writer: Mike McClare (HTSI) Goddard TV Tape: G2007-007HD Keywords: DLESE >> Atmospheric science DLESE >> Chemistry SVS >> HDTV GCMD >> EARTH SCIENCE >> Atmosphere >> Atmospheric Chemistry SVS >> Astrophysics SVS >> Early Universe SVS >> Cosmology SVS >> Big Bang SVS >> Universe     Please give credit for this item to NASA Back to Top + Privacy Policy and Important Notices + Reproduction Guidelines NASA Official: Content Contact: Curator: