Polonium-210 is a radioactive isotope of the element polonium, which is a rare and highly radioactive metalloid. It was discovered by Marie Curie in 1898 and is known for its intense radioactivity. Polonium-210 emits alpha particles, which can be harmful if ingested or inhaled, making it a significant health hazard. This isotope has applications in various fields, including nuclear science and industrial processes. It is used as a heat source in space equipment and as an anti-static agent in some manufacturing processes. Due to its toxicity, strict safety measures are necessary when handling polonium-210.