The two yearly equinoxes occur when the Sun crosses the celestial equator. Veronika is an asteroid . They transmitted images of Mars and its moons back to Earth . It is located along the ecliptic between Leo and Libra. Virgo is seen along the ecliptic .
Viscosity is a result of the internal friction of the material's molecules.
A visual binary is a binary star pair that are far enough apart to be visible as separate objects. The lower the number, the brighter the object. Negative numbers indicate extreme brightness. We can see objects up to 6th magnitude without a telescope. Apparent magnitude is abbreviated m.