Mercury, which orbits the sun every 88 days, reaches its highest altitude in the evening sky on March 8. Although Mercury has been rising as Venus sinks, both will now disappear from the evening sky.

Bluish-white Regulus in Leo is moving toward the western horizon and sets around 10 p.m. in mid-July, followed a couple of ...

Mars shines in the evening, and is joined briefly by Mercury. Jupiter joins Venus as the month goes on. And all month, look ...

The planets Mercury and Venus appear in our western sky this week at dusk.. If you think back to elementary school, you’ll recall learning that Mercury is the closest world to the sun (about 36 ...

Only the two innermost planets, Mercury and Venus, can transit the sun for Earth-based viewers. While Mercury transits happen 13 to 14 times a century, Venusian transits are even rarer, happening ...

New research suggests that Mercury's crust is shifting and twisting in unexpected ways thanks to the force of the Sun.

While Mercury doesn't have a moon, the reason is simply because it's too close to the Sun for its gravitational field to be ...

Venus' closest approach to Earth Even though Venus moves between the Earth and sun every 19.5 months, it becomes visible after sunset and before sunrise only around every eight years, according to ...

Watch the waning gibbous moon, Saturn, and Neptune meet in the night sky around midnight on July 16. The trio will travel ...

Mercury is closer to the sun even than Venus, but is far smaller in physical size and also less reflective—Mercury’s surface is mostly dark volcanic rock, while Venus is enshrouded in clouds ...