What it takes to discover small rocks in space

Once every month, on average, somewhere on Earth a fireball appears out of nowhere and for mere seconds, casts a blinding flash across the sky before it blows up in a thunderous explosion. It happened last Saturday over southern ...

Two small asteroids safely pass Earth this week

Two small asteroids recently discovered by astronomers at the NASA-funded Catalina Sky Survey (CSS) near Tucson, Arizona, are safely passing by Earth within one lunar distance this week.

Temperature of lunar flashes measured for the first time

When small pieces of rock hit the moon's surface at incredibly high speeds, they produce flashes of light detectable from Earth. Now, astronomers have measured their temperature for the first time, using a telescope funded ...

A solar-powered asteroid nursery at the orbit of Mars

The planet Mars shares its orbit with a handful of small asteroids, the so-called Trojans. Among them, one finds a unique group, all moving in very similar orbits, suggesting that they originated from the same object. But ...

Scientists reconstruct the history of asteroid collisions

An international study, in which Spain's National Research Council (CSIC) participates, reveals that asteroids have endured a multitude of impact strikes since their formation 4,565 million years ago. Scientists have reconstructed ...

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