ALIENS. whenever we hear this word, we think of other planets in solar system.
if there is life in our universe on any other planet, then it is 100% surety they will be searching for a new plant to LIVE. because EACH PLANET HAS A LIMITED RESOURCES AND NATUREL SOURCES, and before it gets to finish, we have to find another source,
Stephen William Hawking,
SAYS we are not alone in this universe, and we should not try to find life on another planet, because if there is life and as shore maybe they will have a better technology. a well develop SCIENCE. weapon. then how we will defend, WE JUST CAME OUT OF AN EGG SHELL.. in last 150 year. believes that alien life exists—and that NASA is about to confirm it.
NASA has made statements recently that suggest that the discovery of aliens is a matter of when, rather than if. “Taking into account all of the different activities and missions that are specifically searching for evidence of alien life, we are on the verge of making one of the most profound, unprecedented discoveries in history,” said Thomas Zurbuchen, the associate administrator of NASA’s Science Mission Directorate, before the House Committee on Science, Space in April.
It is true that space exploration has made massive advances in recent years. Since the Kepler Space Telescope was launched in 2009 it has discovered more than 4,000 possible planets, including 30 that are a similar size to Earth and could potentially sustain life.
In February, NASA’s Spitzer Space Telescope team said it had found a system of seven planets orbiting Trappist-1. All of which were a similar size to Earth and three were located within the so-called "habitable zone" of the star—not so far away that water would freeze, nor too close that the planet would burn up.
Researchers have even been able to identify the specific location where life might be most likely to exist outside Earth. NASA’s Cassini spacecraft, in the final months of a 20-year mission earlier in 2017, pinpointed Enceladus, an icy moon of Saturn, as a key site for further exploration.
The surface of the moon is covered by an ocean encased in a thick shell of ice. But the Cassini also observed that plumes of gas, including hydrogen, were spewing out of a geyser and into space. Hydrogen is vital building block for life for micro-organisms, suggesting that some form of life could inhabit Enceladus.
ONE OF OUR NEABORE The Red Planet is a bit like Earth and is thought to have been covered with water at some point in its ancient history.
Spaced out stargazers claim to have spotted all manner of weird things on Mars, from pyramids to alien bears.
But real scientists are no closer to discovering whether the Red Planet is actually a dead planet, or whether it once supported life.
It is thought Mars was frozen over roughly 3.8 billion years ago before warming periods melted the surface and created deep valleys and canyons.
A build-up of greenhouse gases in Mars’ dense atmosphere is thought to have sparked dramatic climate cycles.
Scientists believe this could by why the planet has water-carved features.
Water provides the conditions needed for life – so there could have been living organisms on Mars billions of years ago.
However, they could very well have been wiped out by the changing climate.
Scientist have picked up number of strange signals from distant stars in recent years.
Whilst most of them probably come from natural sources, some signals may have been sent by aliens.
Last year, astronomers Ermanno F. Borra and Eric Trottier published a paper with the title "Signals probably from Extraterrestrial Intelligence" detailing the discovery of 234 signals.
The duo wrote: "We consider the possibility, predicted in a previous published paper, that the signals are caused by light pulses generated by Extraterrestrial Intelligence to make us aware of their existence."
Sadly, we're no closer to working out what aliens are trying to say - or whether they were actually saying anything at all.
Are extraterrestrials living in an ocean on Jupiter's moon?
Two views of Jupiter's ice-covered moon, EuropaAP:ASSOCIATED PRESS
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Two views of Jupiter's ice-covered moon, Europa
Some scientists believe Europa, which is about the size of Earth’s moon, has an ocean hidden beneath its frozen crust.
If the predictions turn out to be correct, this could be a great place to look for alien organisms.
“With abundant salt water, a rocky sea floor, and the energy and chemistry provided by tidal heating, Europa could be the best place in the solar system to look for present day life beyond our home planet,” NASA said last year.
The moon is thought to boast a huge global ocean containing twice as much water as Earth's oceans lurking beneath a layer of extremely cold and hard ice of unknown thickness.
NASA believes it has found evidence of water vapour plumes erupting off the surface of Jupiter’s moon.
Could these plumes contain traces of life that allow scientists to solve this space mystery?
Are we aliens?
A pic of ALMA, the world's most powerful observatory, which is based in the Chilean desertALMA/ESO
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A pic of ALMA, the world's most powerful observatory, which is based in the Chilean desert
Some scientists believe humans are the descendants of Martian life which was carried to Earth billions of years ago on an asteroid.
Scientists believe life might have begin on Mars and then “contaminated” our own planet.
It’s believed life had a better chance of getting started on the now arid planet in ancient times because it used to have the right conditions for alien life – like water and a possible atmosphere.
They think that an asteroid collision caused by space rocks in our solar system smashing into each other might have caused a chunk of life from Mars to land on Earth.
Astronomer Caleb Sharf told Business Insider: “We can find pieces of Mars here on Earth and we suspect that there are pieces of Earth on Mars.
Are there any inhabitable planets near Earth and are they home to life?
An artist's impression of a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the Solar SystemGETTY IMAGES
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An artist's impression of a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the Solar System
Stargazers have already spotted several "exoplanets", which is the name given to planets outside our own solar system.
Since its launch in 2009, NASA’s planet finding Kepler Spacecraft has discovered more than 4000 exoplanet candidates.
Of these, there have been 216 Earth-like located within the Goldilocks Zone — the region around a star in which the surface temperature of an orbiting planet might support water.
The problem is that while most of these Earth-like planets are habitable, they are located thousands of light years away, which means they are out of our reach.
However, astronomers recently found a “second Earth” capable of supporting life.
Astronomers at the European Southern Observatory (ESO) spotted an alien world orbiting Proxima Centauri — a red dwarf, a small low-mass star about 4.25 light-years from the Sun, which they called Proxima b.
They also found a world orbiting a nearby star 14 light years away, which may have an atmosphere that can support life.
European stargazers trained their telescopes on a planet called GJ 1132 b to discover that its blanketed by a thick atmosphere of “alien air”.
The drawings in Valcamonica, near to the central Alps in northern Italy, are believed to be 10,000 years old and are part of a collection of more than 200,000 petroglyphs carved into the rocks of the valley
In 1979, the collection of petroglyphs were recognised by UNESCO as a world heritage site Express. Home of the Daily and Sunday Express.express_logo_poppy
ANCIENT rock art in could prove aliens once visited Earth, according to conspiracy theorists.
The petroglyphs seem to show the strange figures in protective suits, while white lines also seem to be coming from the heads, with some suggesting that it depicts lights built into the helmets.
The drawings in Valcamonica, near to the central Alps in northern Italy, are believed to be 10,000 years old and are part of a collection of more than 200,000 petroglyphs carved into the rocks of the valley.
Most of the drawings are of symbols and animals, but a few, such as these ancient astronaut drawings, stand out for their bizarre nature
The drawings are 10,000 years old
Conspiracy website Unknown5 said: “Believers in ancient alien theories point to these rock carvings as evidence of prehistoric alien visits to earth, and claim that the drawings were the people of the area recording what they were witnessing.”
In 1979, the collection of petroglyphs were recognised by UNESCO as a world heritage site – Italy’s first.
pyramidGETTY
Some point to the pyramids as evidence of aliens
Alien-hunters discover dome and pyramid shapes on Mars
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Conspiracy theorists believe that aliens are depicted through human history, claiming that ET has guided mankind’s evolution.
They point to things such as the mystery still surrounding the building of the pyramids and various other rock drawings as proof that aliens have come to Earth to give our ancestors a helping hand.
Billionaire space entrepreneur Robert Bigelow, CEO of commercial space company Bigelow Aerospace, is just one influential person who believes that aliens have been to Earth, and are still here.– Italy’s first.
Since its launch in 2009, Kepler has dramatically changed what we know about exoplanets, finding most of the more than 5,000 potential exoplanets, of which more than 1700 have been confirmed. The Kepler observations have led to estimates of billions of planets in our galaxy, and shown that most planets within one astronomical unit are less than three times the diameter of Earth. Kepler also found the first Earth-size planet to orbit in the "habitable zone" of a star, the region where liquid water can pool on the surface.
"What we didn't know five years ago is that perhaps 10 to 20 percent of stars around us have Earth-size planets in the habitable zone," says Matt Mountain, director and Webb telescope scientist at the Space Telescope Science Institute in Baltimore. "It's within our grasp to pull off a discovery that will change the world forever. It is going to take a continuing partnership between NASA, science, technology, the U.S. and international space endeavors, as exemplified by the James Webb Space Telescope, to build the next bridge to humanity's future."
This decade has seen the discovery of more and more super Earths, which are rocky planets that are larger and heftier than Earth. Finding smaller planets, the Earth twins, is a tougher challenge because they produce fainter signals. Technology to detect and image these Earth-like planets is being developed now for use with the future space telescopes. The ability to detect alien life may still be years or more away, but the quest is underway.
Said Mountain, "Just imagine the moment, when we find potential signatures of life. Imagine the moment when the world wakes up and the human race realizes that its long loneliness in time and space may be over -- the possibility we're no longer alone in the universe."