World CNN Wire

2 Earth-size worlds revealed beyond our solar system

There are more than 5,000 known worlds beyond our solar system.Since the 1990s, astronomers have used ground and space-based telescopes to search for signs of planets beyond our tiny corner of the universe.Exoplanets are notoriously difficult to directly image because…

James Webb Space Telescope discovers its first exoplanet

The James Webb Space Telescope can add another cosmic accomplishment to its list: The space observatory has been used to confirm the existence of an exoplanet for the first time.The celestial body, known as LHS 475 b and located outside…

Unusually brightening star captures attention as a stellar oddity

Astronomers might have solved the mystery behind an unusually brightening star.University of Washington doctoral student Anastasios Tzanidakis and research assistant professor of astronomy James Davenport were searching for "stars behaving strangely" when they received an alert about a potential stellar…

Rocket aiming to launch satellites explodes off Alaska's coast

A rocket operated by a California-based start-up failed near the coast of Alaska Tuesday, marking yet another mishap for companies hoping to offer their services to launch scores of small satellites into orbit.The privately held ABL Space Systems attempted to…

A galactic merger brought a pair of supermassive black holes together

Two supermassive black holes have been spotted feasting on cosmic materials as two galaxies in distant space merge — and are the closest to colliding black holes astronomers have ever observed.Astronomers spotted the pair while using the Atacama Large Millimeter/Submillimeter…

Dead NASA satellite returns to Earth after 38 years

A defunct NASA satellite has fallen back to Earth after 38 years orbiting the planet.The Earth Radiation Budget Satellite, known as ERBS, was launched in 1984 aboard space shuttle Challenger.Until 2005, data from ERBS helped researchers investigate how Earth absorbed…

Why ancient Roman structures like the Pantheon still stand

Welcome to a new year, where fresh wonder already awaits.Rome has often been called the Eternal City. Ancient Romans took pride in their metropolis and viewed it as an unshakable pinnacle, and poets such as Virgil and Ovid made similar…