Six planets will all be visible at once in the night sky this month, lined up across the sky—but one is set to disappear from ...

MARS is set to appear its biggest and brightest for the next two years tomorrow night, as it reaches opposition with Earth. Opposition is when a planet moves to the same side of the Sun as the Earth.

Mars will also appear larger than at any other time this year. Astronomers use angles to measure the span of celestial objects. At opposition, the Red Planet's diameter will be 14.6 arcseconds ...

The best time to see Mars is when it is opposite the Sun in the sky, or "opposition," as per BBC reports. The previous opposition was on January 16, and as Mars recedes from Earth, March provides ...