The lunar crescent will disappear below the horizon before midnight on Jan. 22.

Looking for a sky event this week? Check out our full Sky This Week column. January 22: Explore the Rosette Nebula The Moon passes 4° north of Saturn at 8 A.M. EST, then passes 4° north of Neptune at ...

Sky This Week is brought to you in part by Celestron. Friday, January 23Pluto reaches conjunction with the Sun at 5 A.M. EST.

Portugal has entered the small group of countries with experimental capability in hypersonic research ...

Scientists have discovered that hydrogen cyanide forms strange "icy cobwebs" at low temperatures. These structures act as a ...

Do you know which planet could float in a giant bathtub? Discover the science behind its low density, its hundreds of moons, ...

The Instituto Superior Técnico (IST) conducted its first hypersonic test, in which the speed reached is equivalent to "crossing mainland Portugal, from north to south, in just over five minutes," the ...

LISBON, Jan. 22 (Xinhua) -- Portugal has carried out its first hypersonic test under real conditions, marking the country's entry into experimental research on extreme high-speed flows, the Instituto ...

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.

Look to the west-southwest after dark on Thursday, Jan. 22, to see a 17%-lit waxing crescent moon moving close to the ringed ...

For months, Saturn has been a steady presence in the sky after sunset, but after tonight, it will move away from our view for ...

In high enough doses, hydrogen cyanide can kill an adult human in minutes, but the chemical may be the reason why we’re here ...