Blast Through the Cosmic NOVA Black Hole Test 2026 – Your Astronomical Adventure Awaits!

Masses of stars and compact objects are usually expressed in solar masses because it directly compares to the Sun’s mass and keeps numbers meaningful for stellar-scale objects. When you estimate an invisible companion’s mass from orbital motions, using solar masses lets you immediately see whether it’s a normal star, a white dwarf, a neutron star, or a black hole. Earth or Jupiter masses are handy for planets or very small bodies, and kilograms would yield unwieldy, hard-to-interpret numbers for such massive objects. So the standard unit used for the invisible partner in this estimate is solar masses.