Our sun’s hotter sister

Stars are not born alone. Rather, they emerge from clouds of gas and dust in groups of up to 10,000, then slowly scatter through space. For the first time, astronomers have identified a star that came from the same solar nursery as our sun, some 4.5 billion years ago. This stellar relative—located 110 light-years away in the constellation Hercules—is hotter […]

Read more

Gold’s cosmic origins

gold meteor

All the gold on Earth was forged in the collisions of massively dense stars billions of years ago. Astronomers have come to this conclusion after observing and analyzing the afterglow of a crash between two neutron stars in a galaxy 3.9 billion light-years away that yielded a hoard of gold likely equal to the mass of 20 Earths. “At today’s […]

Read more

Mapping the moon

Two NASA probes that spent last year orbiting the moon have returned stunning new geological maps that could help explain how it, Earth, and other planets in our solar system formed. The probes, named Ebb and Flow, flew identical orbits just miles above the moon’s surface to measure its gravity field. Slight disruptions in their paths—caused by the push and […]

Read more

Galactic turmoil ahead

The Milky Way and its closest neighbor, the Andromeda galaxy, are on course for “ a head-on collision,” says astronomer Roeland van der Marel of the Space Telescope Science Institute. But no need for precautions because the crash won’t happen for another 4 billion years. Researchers have long known that Andromeda, currently some 2.5 million light-years away, is moving toward […]

Read more

Does Pluto Have a Hidden Ocean?

Does Pluto Have a Hidden Ocean

Scientists have been looking into Pluto’s possibility of having an ocean under its icy (a minus 380 degrees Fahrenheit) surface according to NASA’s New Horizon mission.  This finding may shed some light on the internal world of Pluto.  It has always been thought that Pluto was a frigid planet totally frozen over.  They have discovered that Pluto may have an […]

Read more
1 2 3 4