EarthSized

Astronomers have discovered a new Earth-sized exoplanet, HD 63433 d, in the HD 63433 planetary system, utilizing data from NASA’s TESS. This tidally locked planet is the youngest and closest Earth-sized exoplanet found, being less than 500 million years old. Orbiting very close to a Sun-like star, it experiences extreme temperatures, making it a unique subject for further study. Credit: SciTechDaily.comNew Earth-sized exoplanet HD 63433 d, discovered by astronomers using TESS, is exceptionally young and orbits closely…

Researchers have identified HD 63433d, an Earth-sized planet that is both closer and younger than previously discovered planets of similar size. Its proximity to a youthful, sun-like star provides a unique case study for planetary evolution. (Artist’s concept.) Credit: SciTechDaily.com“It’s a useful planet because it may be like an early Earth”HD 63433d, a new Earth-sized planet discovered by astronomers, offers a rare glimpse into the early stages of planet evolution, given its close orbit around a young sun-like star.A…

NASA’s Hubble Telescope accurately measured LTT 1445Ac, an Earth-sized exoplanet in a nearby triple star system. Initially discovered by TESS, this rocky planet is similar in size to Earth but much hotter. The research enhances our knowledge of exoplanets and their atmospheres. Credit: ESA/Hubble (M. Kornmesser & L. L. Christensen) Hubble Telescope confirms the size of Earth-like exoplanet LTT 1445Ac, offering new insights into its composition and the potential for further atmospheric study. Lots of planets around…

The chances of finding extraterrestrial life have improved slightly after NASA announced that its Hubble Space Telescope has confirmed the size of an Earth-sized exoplanet only 22 light-years from Earth, the nearest that passes in front of its star.Located in the constellation of Eridanus, the exoplanet LTT 1445Ac didn't seem much to write home about. It orbits LTT 1445A, which is one of the three red dwarf stars that make up the triple system of LTT 1445. When it was first discovered by NASA's Transiting Exoplanet Survey…

The Hubble Space Telescope just ogled an exoplanet passing in front of a star in a triple system, revealing the nearby world’s mass.Webb Telescope Images the Pillars of CreationThe world is named LTT 1445Ac, and it was discovered in 2022 by NASA’s Transiting Exoplanet Survey Satellite (TESS). The world orbits a red dwarf star (one in a set of three) that is 22 light-years from Earth, in the constellation Eridanus. LTT 1445Ac shares its host star with two larger planets.TESS doesn’t have the optical resolution necessary to…

Just 22 light-years away, orbiting a small red dwarf star, a tiny world has been confirmed by scientists in the US as the closest known Earth-sized world to our Solar System.It's called LTT 1445 Ac, an exoplanet some 1.37 times the mass and 1.07 times the radius of Earth.While it is unfortunately too hot for life, its similarity to our homeworld marks it as an Earth analog – a world so close to our own that we can use it to study how planets evolve, and what makes one Earth-like world so very different from another.LTT…

LP 791-18 d, illustrated here, is an Earth-size world about 90 light-years away. The gravitational tug from a more massive planet in the system, shown as a blue disk in the background, may result in internal heating and volcanic eruptions – as much as Jupiter’s moon Io, the most geologically active body in the solar system. Astronomers discovered and studied the planet using data from NASA’s Spitzer Space Telescope and Transiting Exoplanet Survey Satellite along with many other observatories. Credits: NASA’s Goddard Space…

A new, Earth-sized planet has been discovered only 90 light-years away from us. In astronomical terms, that’s right next door. What’s more, it might be capable of supporting life.Named LP 791-18d, astronomers detected the exoplanet through ground- and space-based observations by NASA’s Transiting Exoplanet Survey Satellite (TESS) and its now-retired Spitzer Space Telescope.LP 791-18d orbits a small red dwarf star about 90 light-years away in a constellation called Crater in the southern celestial hemisphere. The team that…

Astronomers have traced a repeating radio signal back to a rocky, Earth-sized exoplanet that appears to have one of the crucial factors that make a world habitable: a magnetic field.The planet is known as YZ Ceti b, and it's orbiting a small red dwarf star located around 12 light-years from Earth."The search for potentially habitable or life-bearing worlds in other solar systems depends in part on being able to determine if rocky, Earth-like exoplanets actually have magnetic fields," said Joe Pesce, the program director…

An Earth-sized exoplanet in perhaps the most promising alien system for signs of life is not likely to be habitable to life as we know it.New observations from the James Webb Space Telescope reveal that the innermost world of the TRAPPIST-1 system, an exoplanet named TRAPPIST-1b with 1.4 times the mass and 1.1 times the radius of Earth, reaches a sizzling 230 degrees Celsius (446 degrees Fahrenheit), and is unlikely to have an atmosphere wrapped around its rocky body.This is not a surprise; TRAPPIST-1b is so close to its…