- Binary Star § Astrometric binaries (Wikipedia)
Astronomers have discovered some stars that seemingly orbit around an empty space. Astrometric binaries are relatively nearby stars which can be seen to wobble around a point in space, with no visible companion. The same mathematics used for ordinary binaries can be applied to infer the mass of the missing companion. The companion could be very dim, so that it is currently undetectable or masked by the glare of its primary, or it could be an object that emits little or no electromagnetic radiation, for example a neutron star.
- Beyoncé (Wikipedia)
Beyoncé Giselle Knowles-Carter (/biˈɒnseɪ/ bee-ON-say; née Knowles; born September 4, 1981) is an American singer, songwriter, and businesswoman. Nicknamed “Queen Bey”, she is regarded as a prominent cultural figure of the 21st century. Throughout her two-decade career, Beyoncé has been recognized for her distinctive vocal range and live performances. Rolling Stone named her the world’s greatest living entertainer, and one of the greatest vocalists of all time.