As a blue supergiant, Icarus was much bigger, brighter and hotter than our sun. Since blue supergiants do not have such a large lifespan, Icarus no longer exists, though its light has finally travelled nine billion years away to be viewed today with the Hubble Telescope. (It is possible that Icarus collapsed into a black hole or became a neutron star.)
To see Icarus, an effect called “gravitational lensing” was used, in which the mass of distant galaxies creates a magnifying glass-like effect. Gravitational lensing involves Einstein’s theory of general relativity which says in part, “mass bends light.”
In this case, the gravitational lensing was caused by the galaxy cluster MACS J1149+2223, which is estimated at five billion light-years from Earth.