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Until 1924 everybody believed that the Milky Way galaxy, a swirling collection of stars a few hundred thousand light-years across, made up the entire universe. That was until Edwin Hubble spotted a Cepheid variable star in the Andromeda Nebula, and …
Diffuse nebulae are stellar nurseries, huge clouds of gases inside which stars are born. Seen through the telescope or binoculars they appear as small luminous clouds on the starry background. When searching for them choose your timing, the most diffuse …
Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. They are transient phenomenons, lasting between 30,000 and 100,000 years between formation and complete dissipation. It is likely that our own Sun will …
Globular clusters are the senior citizens of our galaxy – they contain suns at least 12 billion years old. Their tightly packed stars make them extremely spectacular when seen through the telescope, and easy to observe even from light-polluted areas. …
1 | 2 | 3 | 4 NGC 6530 is the cluster formed inside the Lagoon Nebula and it is surrounded by faint traces of nebulosity. I counted 15 stars, closely packed together. Located south of Pollux, NGC 2420 …
1 | 2 | 3 | 4 NGC 2506 is a cluster in Monoceros. Seen at low power it looks extremely well like a comet. At 36x the cluster is unresolved, faint nebulosity surrounds five faint stars that are …
1 | 2 | 3 | 4 NGC 2414 is a difficult cluster in Puppis, with a diameter of four arcminutes. Five stars are visible, of which a brighter one to the east. Even at 120x the cluster is …
Open clusters are extended families of a few hundred comparatively young stars bound together by gravity. They originate from vast clouds of dust and gas – nature’s star-factories – spread all across the Milky Way. Many open clusters such as …
What is star hopping? We live in the age of GO TO telescopes. With only a push of a button you travel from the Lunar neiborhood to the far reaches of deep space in just a few seconds. Despite all …
1 | 2 | 3 | 4 | 5 When you buy binoculars you should check their performance at the store, or if you buy them online, as soon as they arrive. Here are a few tests that will …