When the moon passes between Earth and our Sun on April 20, its shadow tracks across a small part of the Earth’s surface, causing a total solar eclipse in a some areas, and a partial eclipse across much larger, surrounding areas. Light reflected from nearby planets is spread more broadly on entry into Earth’s atmosphere, so planets appear as steady, shining points in the sky.įrom Sydney, the two planets will become visible around 19:46 AEDT, above the western horizon, as dusk fades to darkness, and will then sink towards the horizon, setting more than an hour after the sun at 20:54.Īpril Partial and Total Solar Eclipse April 20 On a clear night, many different stars and occasionally planets are visible to the naked eye, usually appearing as a pinpoints of light in the sky – but planets can be distinguished from stars because they don’t “twinkle.” Stars are so far away that their light comes into our atmosphere as a ‘point source,’ passing through single air cells in our atmosphere, which scatter the light as it moves through different temperatures and densities, making it look twinkly.
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