NASA's 'quiet' supersonic jet is getting ready to take off NASA is continuing development of the X-59, an experimental supersonic aircraft designed to make sonic booms quieter. The X-59 is not ...

When planes exceed Mach 1 (the speed of sound, or about 767 miles per hour—1,234 kilometers/hour for those using the metric ...

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

NASA said Wednesday that new data collected overnight cut the probability of asteroid 2024 YR4 hitting Earth to 1.5%. The chances of impact had been 3.1%.

"An asteroid this size impacts Earth on average every few thousand years and could cause severe damage to a local region," ...

The chances of an asteroid striking Earth within the next decade has more than doubled in a matter of weeks, according to ...

Between layoffs and the Trump administration's controversial buyout offers, both agencies are in for a steep headcount ...

The threat posed by the space rock, estimated to be between 40 and 90 metres in diameter, is the highest ever recorded for an ...

NASA has issued a fresh statement on the potential 'city killer' asteroid known as 2024 YR4 with the odds of it hitting ...

NASA's Jet Propulsion Laboratory has declared a 1.6% chance that a large asteroid would strike the Earth when on Dec. 22, ...

Astronomers are closely monitoring asteroid 2024 YR4, which once had the highest recorded impact probability for its size.