Category Archives: Astronomy

How many stars one can see with the naked eye?

The total number of the stars which can be seen with the naked eye is 9,095, according to the Bright Star Catalogue, 5th Revised Edition. Also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue,
the catalog lists all stars of stellar magnitude 6.5 Notes 1 or brighter, which is roughly every star visible to the naked eye from Earth.

The catalog contains 9,110 objects, of which 9,095 are stars, 11 are novae or supernovae, and 4 are non-stellar objects.

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10 Amazing Facts about Space

The endless depths of the sky intrigue almost all humans alike. Space is like an abstract dream coming to life when it unfolds into a number of unseen horizons. The enormous nebulas, staggering hypernovae and the smattering of countless planets and stars make it a canvas of muse.

We are but a speck of dust in a desert full of possibilities when compared to the vastness of space. There are many realities prospering in the skies above us, it is only natural that we are still unaware of the majority of phenomena taking place on and around the stars.

Just like the count of stars, there are unlimited obscure and consternating facts dwelling in the depths of space. Most of them are surprising and are reminders for us that we are just an addition to the universe. Let us take a swim into the sky with these 10 amazing facts which are bound to fascinate you.

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Watch: The Milky Way as You’ve Never Seen It Before

In April 2018, the European Space Agency’s Gaia observatory released its second data catalog, which includes the distances to over 1.3 billion stars. In the video published by the American Museum of Natural History, museum’s astrophysicist Jackie Faherty breaks down why this information is so revolutionary and explains how this information is helping scientists and non-scientists alike understand the universe like never before.

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50 Scientific Facts About the Earth

One of the most surprising facts about the Earth is how we easily forget that what an amazing and interesting planet we live on. As Carl Sagan pointed out, “It’s home, it’s us”. It is the only world known planet to support an atmosphere with free oxygen, liquid water on the surface, and, perhaps this is the most important amazing, life. Here are 50 scientific facts about the Earth.

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This is probably the most beautiful Solar Eclipse photo ever

More than a year ago, on Monday, August 21, around 2 million to 7.4 million Americans traveled to see the first total solar eclipse in 99 years to go coast to coast in the United States. Photographer Jon Carmichael chose another way. He got aboard a Southwest Airlines aircraft and captured the Great American Total Solar Eclipse from an unusual vantage point at 39,000 feet (11,890 meters). And the result is probably the most beautiful Solar Eclipse photo ever.

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To find aliens, we must think of life as we don’t know it

From blob-like jellyfish to rock-like lichens, our planet teems with such diversity of life that it is difficult to recognise some organisms as even being alive. That complexity hints at the challenge of searching for life as we don’t know it – the alien biology that might have taken hold on other planets, where conditions could be unlike anything we’ve seen before. ‘The Universe is a really big place. Chances are, if we can imagine it, it’s probably out there on a planet somewhere,’ said Morgan Cable, an astrochemist at the Jet Propulsion Laboratory in Pasadena, California. ‘The question is, will we be able to find it?’

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Earth can be a model for detecting vegetation on exoplanets

Back in December 1990, during its flyby of Earth, NASA’s Galileo spacecraft, which studied the planet Jupiter and its moons, as well as several other Solar System bodies, pointed its instruments towards Earth, at the urging of Carl Sagan. And, it has found evidence of life on our planet. This can be a key to detect vegetation on exoplanets – which is a key to a possible intelligent extraterrestrial life.

In a paper published on Nature, researchers wrote “The Galileo spacecraft found evidence of abundant gaseous oxygen, a widely distributed surface pigment with a sharp absorption edge in the red part of the visible spectrum, and atmospheric methane in extreme thermodynamic disequilibrium. Together, these are strongly suggestive of life on Earth.”

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5 Surprising Facts about Mars

For eons, skywatchers have been fascinated by the pale red dot that not only unpredictably moves backward in the night sky but also shines a compelling blood-red. Its color, indeed, is one of the first features we notice about Mars. It seizes our attention, and its compelling ambiguity has evoked a deep visceral reaction from the nomad in ancient savannas to modern astronomers. The ancient astronomer may be satisfied to know that, in fact, Mars is literally blood-red: the same chemical reaction that occurs in the iron in Mars’ soil is the same is the same chemical reaction that occurs in the hemoglobin molecule. Mars, is, quite literally, blood red. Even with our cutting-edge technology and science, Mars still bewitches and amazes us as seen with these five surprising facts about Mars.

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What causes the phases of the moon?

Despite we always see the same side of the Moon, it still looks a little different every night. Sometimes we see only a thin crescent, sometimes a half-moon, sometimes a full moon, and other times in-between. Sometimes even the Moon seems to disappear entirely. These “shapes” called lunar phases or phases of the Moon. A lunar phase is the shape of the directly sunlit portion of the Moon as viewed from Earth.

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