自人类于地球诞生，我们一直尝试了解我们所在的宇宙。经过了数千载的观察和思考，我们已经发展了一套宇宙学标准模型，可让我们更好地描述宇宙热大爆炸以来的演化。然而，随著科技进步和精确测量技术的发展，更多结果显示观测和理论之间存在著矛盾，其中哈勃常数疑难，便是现代宇宙学中的一个迫在眉睫、亟待解决的问题…..
Tag: Astronomy
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Astronomical Events during the Blazing Summer
Full moons are not uncommon occurrences. Yet how much do you know about these natural phenomena? Here we will delve into the two supermoons we just bore witness to. The strawberry full moon on 14 June and buck full moon on 14 July.…
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Giant Black Holes Devouring Stars: Extreme Cosmic Events Illuminating Black Hole Spacetimes
Recent discovery by astronomers reveals that in the centre of every big galaxy there exists a giant black hole which is about one million to one billion times heavier than our Sun. Stars orbit around the black hole being pulled by gravity…
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Dark Matter
If you have done star-gazing, you probably would have enjoyed and admired the majestic arrangements of stars into galaxies. Our Sun is a typical star in the Milky Way, our home galaxy, a typical galaxy in the universe. The hundreds of billions of galaxies in the observable universe group into galaxy clusters, forming even larger structures. Other than stars, what constitutes a galaxy? How did galaxies and galaxy clusters form? How did these structures emerge from the almost perfectly uniform distribution in the early universe? ..…
