For 30 years, astronomers around the world have been searching for space for exoplanets. We recently hit a milestone as more than 6,000 people have been discovered.
In our solar system, Earth is one of eight planets, and there are nine if you want to count Pltune.
But looking beyond the pull of gravity into the boundaries of our Sun’s interstellar space, we see that it is absolutely overflowing with space landscapes filled with worlds of all sizes and characteristics. In fact, for the 30 years since the first explanet was discovered, NASA has recorded a world of over 6,000 milestones beyond the solar system.
And as technology advances, astronomers hope to continue to discover a wide variety of exoplanets among the billions they think exist. But even after 30 years of searching the universe, one question continues for scientists. Are we alone in the universe?
“Is Earth the only home in life? Or is it waiting for other habitable worlds to be found?” the narrator says in a NASA video promoting the milestones. “On every planet we discover, we are closer to answering that question.”
There’s everything you need to know about the exoplanet. And that’s why scientists believe that searching for them is the best way for them to discover whether they exist anywhere else in the universe.
What is exoplanet?
Deformation is a planet outside the Earth’s solar system. Therefore, these bodies are sometimes called extrapolar planets.
Some people, known as Rogue Planets, do not even orbit the stars, but rather flow through an unrelated universe.
How many exoplanets are there?
In 1995, the gas giant known as the 51 Pegasi B orbiting a star similar to Earth’s sun, etched its name into the history of the universe as the first exoplanet ever discovered.
Since then, astronomers around the world have spent 30 years discovering and confirming the existence of thousands of more exoplanets in the distance of the universe.
As of Monday, September 22nd, a total of 6,007 exoplanets have been identified monitoring and tracking explanets, according to NASA’s Explanet Science Institute. One planet will not be considered the 6,000th entry of the milestone, as confirmed planets are regularly added to the count, NASA said in a press release in September that it announced its results.
Additionally, astronomers say there are thought to be billions, not just the nearly 8,000 exoplanet candidates waiting for official confirmation.
How do scientists find exoplanets?
Both terrestrial and space-based space observatory, including James Webb and the Hubble Space Telescope, are essential for imaging and collecting data on potential exoplanets.
Astronomers also expect new future cutting-edge space missions to lead to more discoveries. This includes NASA’s upcoming Nancy Gray Sloman Space Telescope. It is designed to discover thousands of new exoplanets, primarily through a technology known as gravity microlenses.
“This milestone represents decades of space exploration driven by the NASA Space Telescope, a exploration that completely changed the way humans view the night sky,” said Sean Demagal Goldman, director of NASA’s Faculty of Astrophysics, in a statement.
Have we found life on the exoplanet?
In short, it’s not yet.
The exoplanet, known as the K2-18B, gained some fame in April when a team of astronomers claimed they had found atmospheric “still strong evidence” that there was life anywhere except Earth. Other scientists have since questioned the findings. We place the damper on the notion that humanity ultimately has evidence that we are not alone in the universe.
Do exoplanets resemble Earth?
That’s why astronomers are looking for one planet that could potentially harbor a living creature, as they are so similar to Earth.
The universe may be home to both rocky and gaseous worlds that resemble planets in our solar system, but it is also filled with incredibly strange planets like those orbiting our Sun. In space there are Jupiter-sized planets that approach their parental planets than Mercury, and planets orbiting two stars, like two stars named Kepler-16b compared to Tatwein in Star Wars.
Astronomers have also discovered the coldest exoplanet imaged to date, 14 Herculis C. This is about 7 times colder than Jupiter, 26 degrees Fahrenheit. For comparison, most planets are thousands of degrees Fahrenheit.
There are also planets like WASP-193B. It is larger than Jupiter, but is light and faint like cotton candy, and there is also a world like HASP-107B, where sandy clouds in the air fall on its surface like rain.
But among these thousands of worlds, “There are things we haven’t found – planets like us” is a video about NASA’s exoplanet.
“At least, there’s still more.”
Eric Lagatta is a Space Connect reporter for the USA Today Network. Contact him at elagatta@gannett.com
