What it really means being light-years away!
The observable universe is about 93 billion light-years in diameter.” This can be explained as the distance from the Earth to ...
来自MSN2 个月
How long is a light-year? Here are some ways to think about it.
A light-year is the distance light can travel in one Earth-year. One light-year is about 5.88 trillion miles (or 9.46 trillion kilometers). A common misconception — likely because of the word ...
来自MSN18 天
NASA spots 'super Earth' 20 light-years away that could have ALIENS
Best of all, it's just 19.7 light-years away from Earth. This raises the tantalizing possibility that we could snap pictures ... spectrograph at the La Silla Observatory in Chile. Described as one of ...
조선일보14 天
Asteroid 2024 YR4 poses 1.2% collision risk with Earth in 2032
2024 YR4 was discovered on Dec. 27 last year through the ATLAS telescope in Chile. The probability of this asteroid colliding ...