{"id":6596,"date":"2022-03-10T00:00:00","date_gmt":"2022-03-09T23:00:00","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/?post_type=purple_issue&p=6596"},"modified":"2022-03-23T14:31:20","modified_gmt":"2022-03-23T13:31:20","slug":"astronomy-for-beginners","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/2022\/03\/10\/astronomy-for-beginners\/","title":{"rendered":"Astronomy for beginners"},"content":{"rendered":"\n
<\/div>
\n

ASTRONOMY FOR BEGINNERS<\/span><\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

HOW TO SPOT HYDRA IN THE NIGHT SKY<\/span><\/h4>\n\n\n\n
WHEN: MID-MARCH TO MID-APRIL<\/span><\/h5>\n\n\n\n

The largest constellation is also one of the most ill-defined. Hydra the Water Snake slithers onto the scene in spring, fully taking nine hours to completely appear above the UK\u2019s southern horizon. Tracing its full length takes some doing, but there are guides.<\/span><\/p>\n\n\n\n

Hydra starts with a small sideways teardrop-shaped pattern. This is located below the faint, inverted-Y shape of Cancer the Crab. If you\u2019re struggling here, extend the side of the Plough\u2019s blade nearest the handle, down with respect to the plough, to reach bright Regulus in Leo the Lion. Above Regulus, identify the backward question-mark pattern called the Sickle. Look one-and-a-half Sickle heights right from Regulus. Just below where you end up is Hydra\u2019s sideways teardrop-shaped head.<\/span><\/span><\/p>\n\n\n\n

From here, look down and left for a solitary, orange-hued star called Alphard. This is Hydra\u2019s alpha star, its name meaning \u2018the solitary one\u2019. Hydra\u2019s body meanders left and down from Alphard but is not easy to identify.<\/span><\/span><\/p>\n\n\n\n

Along the Water Snake\u2019s back sit three small constellations. Sextans the Sextant lies near Alphard but being made up of three barely visible stars, is also not an easy find! Keep going along Hydra\u2019s back and eventually you\u2019ll find the faint but distinctive outline of Crater the Cup. If you extend the curved handle of the Plough away from the blade this brings you to bright orange Arcturus in Bo\u00f6tes. Keep going and you\u2019ll arrive at white Spica in Virgo. Crater hangs down from the midpoint of the line between Alphard and Spica.<\/span><\/span><\/p>\n\n\n\n

Left of Crater sits Corvus the Crow, a small but thankfully more distinctive pattern. The compact quadrilateral made from Corvus\u2019s brighter stars forms an asterism \u2013 an unofficial pattern \u2013 known as the Sail, so-called because it looks like the sail of an ancient boat sailing along the horizon. PL<\/strong><\/span><\/p>\n<\/div><\/section>\n\n

<\/p>\n\n

ILLUSTRATION: PETE LAWRENCE<\/p>\n","protected":false},"excerpt":{"rendered":"

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