Mercury

The next transit of Mercury will not be until 2032.

Researchers found concentrations of mercury among lions in coastal populations were three times as high as those in inland areas.

This celestial event only takes place around 13 times a century.

Mercury transits take place only around 13 times a century.

The planets are prompting some serious self-reflection and realizations this summer, according to astrologers.

You can blame the first few weeks of retrograde spent in Leo before switching back to Cancer for all the confusion.

The probe will use gravity like a slingshot on its seven-year voyage to Mercury.

Full alignment will be easier to see from the Southern Hemisphere—but people at Northern latitudes should still be able to spot Mars, Saturn and Jupiter.

"It'll be hard to walk away from Elliot, but ... it's nice to walk away on a high note."

Some people think this celestial event can wreak havoc here on Earth, but NASA disagrees.

The BepiColombo spacecraft will be frozen, toasted and exposed to intense radiation on its way to the planet.

The tiny planet is built kind of like a peanut M&M.

"Mercury is just so weird and so exotic compared to the Moon and other terrestrial planets," Kathleen Vander Kaaden, a planetary scientist at the engineering company Jacobs Engineering Group working on a contract at the NASA Johnson Space Center in Texas, told Newsweek.

The planet is likely the densest Earth-sized planet ever found.

"There would be no environmental problem if everything remained frozen, but we know the Earth is getting warmer."

The planet Mercury was the key for this latest feat.

The moon won't obscure three planets again in this way until 2036.

Don't cry too much about Cassini. Upcoming missions are going to Mars, Mercury, the Sun, Europa and several asteroids.

The rare astronomical can be seen between 7:12 a.m. and 2:42 p.m. Eastern time.

Mercury, Venus, Saturn, Mars and Jupiter will be visible in the pre-sunrise sky for the next month.

After four years in orbit around Mercury, the spacecraft is "out of fuel and under gravity's spell."

Scientists recommend eating younger, smaller fish.

In 2015, we'll get our first close look at our favorite former planet, Pluto, learn more about Mars, and get a look at two total eclipses.