Free Astronomy Magazine September-October 2024

SEPTEMBER-OCTOBER 2024 covery was unexpected and un- precedented, given the stars, disks, and jets’ age, size, and chemical makeup. Their location in a known, well-studied part of the Universe adds to the thrill. Atacama Large Millimeter/submil- limeter Array (ALMA) and NASA’s James Webb Space Telescope’s (JWST) Mid-Infrared Instrument (MIRI) were combined for this re- search. ALMA and JWST’s MIRI observe very different parts of the electromag- netic spectrum. Using them together allowed astronomers to discover these twins, hidden in radio and in- frared wavelengths in star system WL20, located in the nearby rho Ophiuchi molecular cloud complex, Parallel disks and jets erupting from a pair of young stars by ALMA Observatory Bárbara Ferreira M ost of the Universe is invis- ible to the human eye. The building blocks of stars are only revealed in wavelengths out- side the visible spectrum. Astronomers recently used two very different and powerful telescopes to discover twin disks and twin par- allel jets erupting from young stars in a multiple-star system. This dis-