(Phys.org) —Stars form as gravity coalesces the gas and dust in an interstellar cloud until the material develops clumps dense enough to become stars. Even after a star begins to burn its nuclear fuel ...

While telescope alignment continues, the James Webb Space Telescope's Mid-Infrared Instrument (MIRI) is still in cooldown mode. MIRI, which will be the coldest of Webb's four instruments, is the only ...