Kepler-1649c is located 300 light-years from Earth and is only 1.06 times larger than it. When comparing the light that the two planets receive from their stars, scientists found that this exoplanet receives 75 percent of the light Earth does from the sun.
The planetary system TYC 8998–760–1, sitting 300 light years from Earth, shows a pair of massive worlds orbiting a star much like our own Sun.
We don't know whether life exists on Kepler-452b, but we do know that it has some things in common with the Earth. For instance, Kepler-452b takes 385 Earth days to complete its orbit around its star, which is only a bit longer than one Earth year.
Kepler-186f resides in the Kepler-186 system about 500 light-years from Earth in the constellation Cygnus.
One of the most distant exoplanets is 3,000 light-years (17.6 quadrillion miles) away from us in the Milky Way. If you were to travel at 60 miles an hour, you would not reach this exoplanet for 28 billion years.
This duration is a bit of a problem, as it makes space exploration a painstakingly slow process. Even if we hopped aboard the space shuttle discovery, which can travel 5 miles a second, it would take us about 37,200 years to go one light-year.
Wagg's exoplanet is located in a distant solar system within our home galaxy, the Milky Way, 1,000 light years from Earth. It's about the same size as Jupiter, but only takes two days to orbit its star. Jupiter, by comparison, takes 12 Earth years, or 4,272 days to orbit the sun.
About 420 light years away in our galaxy lies a young planet going around a young Sun-like star. This planet has rings, much like Saturn. What is not like Saturn though is the truly colossal size of the rings. Meet J1407b – an exoplanet 20 times more massive than Saturn.
That's what Rivinius and his collaborators found when they examined HR 6819, a seemingly ordinary pair of stars about 1,000 light-years away in the constellation Telescopium.
Using data from NASA's Transiting Exoplanet Survey Satellite, scientists have identified an Earth-size world, called TOI 700 e, orbiting within the habitable zone of its star – the range of distances where liquid water could occur on a planet's surface. The world is 95% Earth's size and likely rocky.
Kepler-452b (sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics; also known by its Kepler Object of Interest designation KOI-7016.01) is a super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the system ...
In 2020, Gilbert and others announced the discovery of the Earth-size, habitable-zone planet d, which is on a 37-day orbit, along with two other worlds. The innermost planet, TOI 700 b, is about 90% Earth's size and orbits the star every 10 days.
Then, just last year, scientists discovered another Earth-like planet orbiting one of our closest neighboring stars, Proxima Centauri. Currently, this planet is the best candidate we have for supporting human life.
Three (Venus, Earth, and Mars) out of eight planets might be able to support life. Based on recent discoveries of planets outside of our Solar System, it was estimated that 1 in 5 planets could exist in the habitable zone of their star: Average lifetime of a planet.
It's a magenta-colored planet! Named GJ 504b, the planet is made of pink gas. It's similar to Jupiter, a giant gas planet in our own solar system. But GJ 504b is four times more massive.
However, unlike Saturn, Uranus and its rings are 'tilted' almost completely sideways, like a spinning top that has fallen over. This means that as the planet orbits the Sun, each of its poles experiences continuous sunlight for around 42 years at a time, followed by 42 years of complete darkness.
We know that light takes time to travel, so that if we observe an object that is 13 billion light years away, then that light has been traveling towards us for 13 billion years. Essentially, we are seeing that object as it appeared 13 billion years ago.
It's orbiting Gargantua, the massive glowing black hole that exists in the foreign galaxy. Due to Gargantua's massive gravitational pull, “every hour on that planet is seven years on Earth”. After a massive tidal wave hits the spacecraft and delays their exit, they find that 23 years have passed on Earth.
A day on Venus is longer than a year
That's 243 Earth days to rotate once – the longest rotation of any planet in the Solar System – and only 224.7 Earth days to complete an orbit of the Sun.
One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately 6 trillion miles (9.7 trillion kilometers).
Distance Information
The Milky Way is about 1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kpc) across. The Sun does not lie near the center of our Galaxy. It lies about 8 kpc from the center on what is known as the Orion Arm of the Milky Way.