Benjamin Abeles (23 June 1925 – 14 December 2020) was an Austrian-Czech physicist whose research in the 1960s in the US on germanium–silicon alloys led to the technology used to power space probes such as the Voyager spacecraft. He grew up in Austria and Czechoslovakia and arrived in the UK in 1939 on one of the Kindertransport missions. He completed his education after the war in Czechoslovakia and Israel (from 1949), obtaining a doctorate in physics. He then lived and worked as a research physicist in the US and retired in 1995. His honours include the 1979 Stuart Ballantine Medal and his induction into the New Jersey Inventors Hall of Fame (1991).