When I was at school I was fascinated by space, but also by the weather. I devoured the library's science books, describing how the weather changed with the seasons. Those books depicted the seasons with delightfully sentimental illustrations. Spring was represented with lambs gambolling in fields of wild flowers; summer was a beach scene with children making sandcastles; autumn showed a child in a raincoat and wellies splashing through puddles; winter was a snowman, surrounded by a family dressed in scarves and gloves and a robin in a nearby holly tree. Eventually, I learned that the night sky has seasons too: as the months pass, amateur astronomers look at different celestial objects at different times of the year. In summer, we observe the misty band of the Milky Way and noctilucent clouds (NLCs). In autumn, we gaze again at the star-frothed spiral of the Andromeda Galaxy, M31, and frosty winter nights belong to Orion, its nebulae and glittering star clusters.
Spring is 'galaxy season', when telescopes swing towards a selection of constellations, hunting for the faraway galaxies that lie within them. Over the following pages we'll look at why springtime is a boon for galaxy-hunters, and highlight three constellations and a nearby galaxy cluster that contain some of the best galactic targets to point your telescope at over the coming weeks and months.
Why is springtime galaxy season?
Our planet's journey around the Sun provides us with an ever-changing view of the Universe
Diese Geschichte stammt aus der May 2022-Ausgabe von BBC Sky at Night Magazine.
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Diese Geschichte stammt aus der May 2022-Ausgabe von BBC Sky at Night Magazine.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
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Could We Find Aliens by Looking for Their Solar Panels?- Designed to reflect ultraviolet and infrared, the panels have a unique fingerprint
Researchers searching for life beyond Earth spend a lot of time thinking about what telltale signs might be detectable astronomically. Forms of unambiguous evidence for the presence of life on another world are known as biosignatures. By extension, techno signatures are indicators of activity by intelligent, civilisation-building life.
Antimatter- In our continuing series, Govert Schilling looks at antimatter, the strange counterpart to most of the matter filling our Universe
Particles and corresponding antiparticles are very much alike, except they have opposite electrical charges. For instance, the antiparticle of the electron - known as the positron - has the same tiny mass, but while electrons carry a negative electrical charge, positrons are positively charged.
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The Big Bang produced a Universe filled almost exclusively with hydrogen and helium; all other elements - what astronomers call metals - were produced by stars, supernovae and everything that happens later. So if you can pick out a pristine star with no metals polluting it from among the billions in the Milky Way, then you are likely to have a star dating from our Galaxy's earliest days.
Inside The Sky At Night - Two years ago, exoplanet scientist Hannah Wakeford received some of the first data from the JWST
Two years ago, exoplanet scientist Hannah Wakeford received some of the first data from the JWST. In July's Sky at Night, we discovered what she's learned since then.
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