Our Sun May Have A Long-Lost Twin â Scientists Named It 'Nemesis'
Astronomers say it's likely "Nemesis" broke away from our sun millions of years ago.LEARN MORE
One small change to the sun, and life on Earth would look very different.
It turns out, our sun is nothing special. Although it's the only star known to host a habitable planet, some astronomers say our sun is just ordinary.
Some scientists argue our star exhibits certain characteristics that do make it unique. It's more massive and has a slightly different chemical composition than other solar types. And while others like it tend to have multiple stars in their planetary systems, our sun is by itself. Astronomers have found only a few other stars in the universe like ours.
But if the sun is special, some researchers argue Earth-like life might be just as unique. There might still be life or signs of life on other celestial objects, but it would look different from the life we know.
For example, plants on a planet orbiting a dimmer, cooler star than ours would appear darker to our eyes since they would need to soak up more light. And there might be less liquid water on the surface of a planet orbiting a hotter star.
But if the sun is as ordinary as the new study claims, our search for alien life might show us something a bit more familiar.
NASA has been funding search programs to observe the night sky in order to discover as many asteroids as possible.By NASA/Goddard/University of Arizona/CSA/York/MDA via AP
The plane, with its two fuselages and 385-foot wingspan, soared for six hours straight, reaching an altitude of 22,500 feet.By Stratolaunch
Comet C/2022 E3 (ZTF) is forecasted to be the brightest from January 31 to February 1. Experts say it will be most visible just before dawn.By Steve Bellavia
The daily ritual resembles a race for concert tickets when online sales begin for a major act.By Elliot Spagat / AP
A fatal beating. Cries for his mom. Officers cheering each other on. Here are some of the key takeaways from the Tyre Nichols police bodycam footage.By City of Memphis via AP
The unit's disbandment comes as protests have spread throughout the city in recent days.By Gerald Herbert / AP