Our cosmos is full of adventures and rare and amazing events have been occurred here time to time. It is a place where nothing seems to be impossible. It is a place where you can find things that are beyond your imagination and thinking of your mind. Every day we discover new things about our universe and our knowledge is increasing day by day. But beside these there are some events that violate the border of science and they are so amazing that no other explanation is suitable to define them. So in this topic I am listing some those rare events that have occurred in our universe since its birth and also will occur in its fate.
So Let's explore..................................................
1.Ultra-diffuse Galaxies(UDGs):
The Ultra diffuse Galaxies are approximately 47 in numbers but the number of stars are so much small in them that if you are living on a planet in that galaxy then the view of night sky will not as same as Earth and you could see only a deep-dark and calm empty space. The astronomers are not sure that how these galaxies have been formed but it is possible that these galaxies are failed galaxies that somehow sputtered out of gas and dust, or they were pulled off of other galaxies.
They were found in the cluster of "Coma cluster" which looks like a cosmic moss having a gobs of dark matter in which the galaxies are diffusing out at great velocity.
2.Suiciding Comet:
Comets looks beautiful. They are tiny and cute spot of light which showers the night sky with its beautiful pyrotechnics(आतिशबाजी). But recently the Hubble Space Telescope (HST) discovered a rare cosmic event- an on self, spontaneous comet destruction.
Comets are very fragile and can be broken down into the pieces easily by cosmic collisions, that's because they are only the bodies of frozen ice which are made up of water. But when an asteroid name :P/2013 R3", came into the contact of sunlight then it gradually pulled apart from its colony by the slow cumulative effect of the sunlight.
When few rays of sunlight falls onto its body then nothing happened, but when it came into the contact of direct sunlight then it gradually stared to spin. Due to this the rotational speed of R3 increase at a huge rate making him to disintegrate into 10 large pieces having the weight if 200,000 tons. Some pieces were bigger than the Mount Everst.
The chunks are slowly moving away from each other at the speed of 1.5 km/hr. In the future, people may see a shower of bright lights in the night sky because some of its pieces will not get sucked by our sun and they will cross our path as meteors.
3.A Weird Planet With Odd Tempreatures:
The planet names "55Cancri E", is known to be popular as a ,"diamond planet", but the astronomers have discover a new thing or you can say property of this planet. And it us that, the planet canbs spontaneously(अपने आप) change its tempreature by upto 300%. That is an odd feature for a rocky planet.
This finicky planet is also the innermost planet of its solar family which contain five more planets. And this planet live quite tumultuously(उपद्रवी). It's revolution speed is so fast that it completes its orbit in a speedy speed if 18 hours. It is also tidly locked, in which it scene side faces it's star permanently while other face is away from its star permanently. And this in terms brings a huge range of tempreature change. It's tempreature ranges from 1,000-2,000 degree Celsius(1,800-4,800°F), astronomers says that it's surface is covered with active volcanoes.
So astronomers think that this could explain it's odd thermal behivour so the possibility of the giant diamond is eliminated because it appears that we have overestimated it's carbon content. The hypothesis of giant volcanoes on this planet is supported by the presence of volcanoes in the jovial satellite "lo", which is close to its planet and the tidal forces are ripping its surface strongly which has turned him into a giant volcano.
4.A Weird Planet Kepler 7b:
You must have heard about Kepler 7b if you are a cosmological enthusiastic. This planet is weird planet. It surprises us with many of its odd features and properties. It's size is about 1.5 times the size of the Jupiter but it is less massive than the Jupiter. It means the density of this planet is planet is equal to the density of Styrofoam. So it means that this planet could easily float on any ocean that could accommodate such a gigantic structure.
Other things about this planet is that it is a gassy wisp. In 2013, the astronomers mapped the clouds of this planet and first time they saw some very odd features of this planet. From infrared imaging, the astronomers managed to measure the tempreature of this gas giant and they found that the tempreature of this planet was about 800-1,000°C (1,500-1,800°F). You think that this is pretty hot but you are wrong because it was much cooler than expected—As the Kepler 7b lies closer to its star than Mercury does to the sun. After three years of observation this mysterious phenomenon solved—As the dense clouds present in the higher altitudes of the gas giant planet reflect most of the incoming sunlight, which makes the planet pretty cooler than the Mercury.
Even more amazing thing is that the one side of this planet is washed completely with dense and dark clouds while other one enjoys a clear and calm weather.
5.Giant Star Nursery:
Most of the stars in our universe lives in small groups and this type of group is known as "globular clusters". Such regions of the universe contain upto one million stars and these types of groups can be found everywhere in the universe. There are upto 150 globular clusters in our "Milkyway galaxy" and all are very very old, giving no clue to their formation. But recently the astronomers have discovered a rare celestial object—a newly formed globular cluster full of gas but lacking in stars.
Deep within the cosmos, in "Antennae Galaxies", upto 50 million light years away, a giant cloud of gases having the mass of upto 50 million suns, is a candidate for the gigantic polar star nursery. This is the first time that the astronomers have find such kind of the object in the universe. It is like a dinosaur egg, that is about to hatch.
It is believed that this types of region in the space remain star free for about only one million years. So it is possible that in near future we would become witnessed to a very magical cosmic event and that is, "the birth of a star".
This discovery is very precious, as it could provide us events about a most ancient processes of our universe and how our universe was looks like, in its early stages. It is also possible that these regions are responsible for the formation of those beautiful and wonderful globular clusters that we see today.
6.Cosmic Dust Mystry, Solved:
At 12,000 meters (40,000 ft) above the sea level the NASA's "Stratospheric Observatory for Infrared Astronomy (SOFIA)" helps the astronomers to sovereign the mystry of cosmic dusts. At the height of 12,000 meters the level of water vapour and dust particles in the air is very low, so this provides a clear view of the cosmos from the Earth.
Going deep into the space a 10,000 year old supernovae named "Sagittarius A East", the astronomers looked up to its remnants with the infrared telescope(SOFIA) and discovered a dense region of gas around the star's cosmic dust particles. This prevent their eradication from the massive shock waves that have formed during the death of this star.
Even though only 7%-20% of those dust around the Sagittarius A East managed to survive the obliteration process. The mass of this cloud is enough to form 7,000 Earth sized planets.
7.The Moon Hit By Meteor:
The "Preseid" meteor shower up the night sky with its beautiful pyrotechnics(आतिशबाजी) on every mid - July to late - august. But something starnge happened one night of august.
On August 9, 2008, the astronomers saw something unusual on the Moon's surface. The pieces of rocks and pebbles strike the Moon regularly, Ah!, thank God the Moon has no atmosphere. Some particles(Preseids), the pieces of slowly disintegrating comet died in a glorious way leaving a flurry of light against the surface of Moon. And this whole event was visible to anyone with a general telescope at night.
From 2005, the "NASA" has witnessed 100 such types of events on the lunar surface. So from this precious data they can protect their astronauts (from these bullet like meteoroids that can strike the moon without notice) that will go for lunar missions in the near future. The predection of these strikes, which can explode with the power of one hundred TNTs, is nearly impossible. But finding out any potential patterns is undoubtedly a magic for the future missions that are held for Moon.
8.Weird Dwarf Galaxies, That Produce More Stars Than Huge Galaxies:
"Dwarf Galaxies" are the smallest galaxy groups in our universe. But they are very powerful showing us on the cosmic scale that size does not matters. The astronomers performed some astronomical surveys to find the rate of formation of stars in mid to high mass galaxies including our Milkyway too. But not until recently they studied the smallest one. So they looked into the past upto eight billion years to determine the relationship between the galactic mass and the power of the rate of formation of stars.
When the Hubble Space Telescope ( HST ) looked at these dwarf Galaxies with its infrared vision, the astronomers were surprised to know that the dwarf galaxies were producing more stars that their bigger counterparts. That's quite shocking because you would normally expect that the more gas means more stars in a galaxy. However, these tiny galaxies proved to be the most productive galaxies with an ability of producing the stars at the double the rate of their bigger competitors only in 150 million years.
In a normal or medium sized galaxy, such growth would require a lot of time (upto one to three billion years) and a hard gravitational work. Sadly, it becomes a mystry that why these dwarf Galaxies are so productive. So the astronomers are trying to spy their secrets.
9.Triple Jupiter Eclipse:
Solar eclipses are a wonderful events in cosmos. They have importance for both science and religion. Past few years we have witnessed many rare as all as beautiful eclipses like "the solar eclipse of July 2008" we enjoy this perfect view because the position of the Earth is just right from its cosmic counterparts, the Sun and the Moon.
Both the solar and lunar eclipse are a wonderful events occurring in the universe bit what about the triple jovial eclipse. In January 2015, the Hubble Space Telescope caught up a weird cosmic event, a triple Jupiter Eclipse. This amazing show was performed by the Galilean satellites, "Lo", "Europa" and "Callisto". They lined up infront of the Jupiter.
Any observer standing on the Jupiter at that time would viewed a very amazing triple solar eclipse. It you want to see this event again then you have to wait for the year 2032.
10.Astronomers Witnessed A Weird Star:
From a long time the astronomers have been watching a burgeoning star, named "W75N (B)"-VLA2.
Located upto 4,200 light years,;VLA2 was first came in tge sight of astronomers in the year 1996 with the help of National Science Foundation's "Very Large Array", a radio observatory in San Augustin, New Mexico. At first they saw a dense cloud of gas releasing from the restless star's body.
Then again in 2014, the astronomers moved tge eyes of VLA2 in the direction of that star. They found that the baby star looked radically different.
After some years the star evolved according to the scientifically predicted models. Over the past 18 years, the gases surrounding the star has been stretched out by the interactions with a huge torus of dust and debris that has surrounded the star's body.
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