KABOOM A huge supernova explosion, or hypernova (as seen in this artist’s illustration), could have spawned some of the galaxy’s oldest stars, which researchers found orbiting the Milky Way’s central bulge.
GRAVITY'S CENTURY Einstein's general theory of relativity, published in November 1915, describes gravity as the warping of spacetime by masses such as the Earth and moon. The latest issue of Science News celebrates general relativity's 100th anniversary.
Nicolle Rager Fuller
NEUTRINO NOBEL Arthur McDonald (left) and Takaaki Kajita shared the Nobel Prize in physics for the discovery that neutrinos oscillate between different types, which demonstrates that the particles have mass.
From left: K. MacFarlane/Queen's Univ./SNOLAB; Courtesy of the Univ. of Tokyo.