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[Music]

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what's up for June planets Buzz The

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Beehive your bright evening stars and

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how the summer solstice revealed the

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size of planet Earth

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on June 1st and 2nd Mars will be in the

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beehive

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the red planet passes through the

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Beehive cluster also known as precipe or

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m44 it's a well-known open cluster of

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stars located about 600 light years away

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in the constellation cancer of the crab

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the pairing will make for great viewing

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through binoculars or a small telescope

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with a sparkle of faint Stars

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surrounding the rust-colored disc of

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Mars

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together throughout the month in the

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Western sky following Sunset nearby is

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brilliant blue white star regulus the

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heart of Leo the Lion

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and on the 20th through the 22nd the

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Crescent Moon passes through making an

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especially lovely grouping at dusk on

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June 21st

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turning to the morning sky Saturn and

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Jupiter rise Before Dawn with the ringed

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planet Rising around midnight and

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leading brilliant Jupiter into the new

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day

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early risers will find them on the

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Eastern side of the sky before sunup all

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month long

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and you'll find Jupiter Rising with the

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Crescent Moon on June 14th

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facing Southward early on June evenings

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you'll notice two particularly Bright

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Stars high up in the sky they are spica

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and Arcturus

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blue white spica is the brightest star

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in the constellation Virgo the maiden

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it's located about 250 light years away

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and is actually two stars orbiting each

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other every four days at a distance far

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closer than Mercury orbits our sun

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orange giant Arcturus is the brightest

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star in the constellation booties the

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herdsmen it's the fourth brightest star

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in the sky

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it's much closer than spica at a

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distance of about 37 light years

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it's also quite an old star compared to

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our sun at an age of seven to eight

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billion years

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also on June evenings you'll notice the

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stars of the summer triangle Vega deneb

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and Altair rising in the couple of hours

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after dark and heralding the long warm

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nights of Northern summer

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the triangle Rises earlier each month as

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summer progresses

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June 21st is the summer solstice for the

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Northern Hemisphere and winter solstice

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in the southern hemisphere for the north

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it's the longest day of the year as the

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sun traces its highest longest path

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across the sky

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more hours of sunlight in addition to

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the more direct angle of the sun

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overhead translate into warmer

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summertime temperatures for our planet's

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summer hemisphere the situation is

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reversed for those living south of the

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Equator where it's the shortest day of

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the year during the cool months of

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winter

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the June summer solstice has another

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interesting claim to fame it helped the

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ancient Greeks 2200 years ago to

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understand the size of our planet with

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remarkable accuracy

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a scholar named eratosthenes noted the

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difference in the length of the Shadows

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cast by poles placed in the ground in

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Two Cities 800 kilometers apart at noon

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on the day of the solstice one cast no

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Shadow at all and the other cast a

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significant shadow by comparing the

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Shadows with the separation of the two

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cities eratosthenes deduced that Earth

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was about 40 000 kilometers in

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circumference which is the actual value

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he was also the first to calculate the

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tilt of Earth's axis which after all is

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what's responsible for the solstices and

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for the seasons themselves

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here are the phases of the moon for June

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stay up to date with all of NASA's

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missions to explore the solar system and

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Beyond at nasa.gov I'm Preston Dykes