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Nick

How do you see an object that absorbs light?

Scientists manage to image the black hole residing at the centre of our galaxy.These are the announcements in Cosmology I absolutely adore, largely because they speak of the essence o...
Wing

The Anthropic Principle: A New Topic in Introductory Astronomy

Living in the age of science, we are often reminded of the fine balance required for life to exist on our planet the perfect blending of chemical elements and energy necessary ...
Niall

A morpho-kinematic and spectroscopic study of the bipolar nebulae: M 2𕒽, Mz 3, and Hen 2�

Context. Complex bipolar shapes can be generated either as a planetary nebula or a symbiotic system. The origin of the material ionised by the white dwarf is very ...
Gaia

Should humans consider Mars as an alternative planet to live on?

Introduction What`s the first thing that comes to your mind when you hear that life is found on a planet that`s not the Earth? Small ...
Robert

Collision of binary Black Holes may unravel mysteries of gravitational radiation

One of the most fantastic predictions of Einstein’s general theory of relativity has been the existence of gravitational radiation. Should gravitational waves be real, it means that t...
Frank

Stellar Magnitude

OVERVIEW It seems counter-intuitive that a so-called magnitude 1 star is brighter than a magnitude 6 star. Hipparchus, who bequeathed Ptolemy and then us his classification system,...
Alex

Life Cycles of Stars

Space as we know it seems like a great expanse of emptiness but in actuality, it is filled with microscopic particles of gas and dust called interstellar medium no more than centimetr...
Emma

Aliens in our backyard

When you hear the word 'alien', what do you think? The phrase 'little green men' probably springs to mind, as well as the memory of countless Star Trek humanoids, Sigourney Weaver's A...
John

'Earth has a second Moon' - how can that be true?

Look up at the Moon on a dark night - it's THE Moon for good reasons: For most of our history it's been the only one we've known about, it has been the subject of countless legends...
Richard

The Real Big Bang

When Edwin Hubble looked out into the Universe in the 1920s he saw that ALL (except Andromeda) the galaxies were racing away from us! More than that he saw that the further away a gal...
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