TEHRAN (ANA)- After NASA’s historic Double Asteroid Redirection Test, a JPL-led study has shown that the shape of asteroid Dimorphos has changed and its orbit has shrunk.
TEHRAN (ANA)- When a galaxy runs out of gas and dust, the process of star birth stops. That takes billions of years but, there's a galaxy out there that was already dead when the Universe was only 700 million years old, the University of Cambridge found.