Mars is sweeping right into the middle of a starry cosmic beehive that outshines its dim constellation of Cancer, the Crab tonight.
The Beehive Cluster (referred to officially as Messier 44 or M44), is a swarm of at least 1,000 loosely bound stars about 600 light-years from Earth. This cluster will receive a visit from the Red Planet on Friday (June 2), offering a great opportunity for skywatchers and astrophotographers alike.
Mars is now crossing the Beehive Cluster and will be closest to its center at nightfall tonight (June 2). From New York City, the duo will be visible at 9:15 p.m. ET (0115 GMT) when it reaches an altitude of 30 degrees above the horizon to the west, according to In The Sky. (For reference, the width of your fist held out at arm's length corresponds to about ten degrees in the sky.) Both Mars and the Beehive Cluster will set at 12:07 a.m. ET on June 3 (0407 GMT), which is about three hours and 46 minutes after sunset. By the time Saturday evening (June 3) rolls in, Mars will have moved past the cluster's boundaries.
If conditions aren't right in your area to see this spectacle tonight, no need to worry: The Virtual Telescope Project will a host a free telescope livestream of Mars and the Beehive Cluster beginning at 4 p.m. ET (2000 GMT). Watch it here courtesy of the Project.
The Beehive Cluster, whose stars are only 600 million years old, is the nearest such open cluster to Earth and spans 1.6 degrees in the night sky, about the width of three full moons.
With an unaided eye, the cluster is seen as a faint cloud or a celestial mist, which is how French astronomer Charles Messier described it in his famous 18th century catalog of 110 unusual deep-sky objects — one of which is M44.
In 2012, NASA's now-retired Kepler Space Telescope had for the first time found two Jupiter-like planets closely orbiting sun-like stars in the Beehive Cluster. Among other potential planets that Kepler had cataloged while observing the cluster, astronomers confirmed the identity of six additional planets in 2016.
Tonight, the Beehive Cluster shines at a magnitude of 3.1 and will be a speckled background for Mars's visit, which at magnitude 1.6 will be sailing through the cluster as a brighter orange-red dot in the night sky.
Binocular-equipped stargazers can resolve up to 20 stars of the young Beehive Cluster, while a telescope will be able to get hundreds more into focus, according to Binoculars Sky.
And you're looking to snap photos of this event or the night sky in general, check out our guide on how to photograph the planets, as well as our best cameras for astrophotography and best lenses for astrophotography.
Editor's Note: If you snap an image of Mars in the Beehive Cluster and would like to share it with Space.com's readers, send your photo(s), comments, and your name and location to email@example.com.