The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, and has most recently been popularized in the novel and television show ...

Today, the European Space Agency's gamma-ray telescope ends its observations. During its 22 years in space, Integral has reshaped our view of the most dramatic events in the universe. The high ...

Firefly Aerospace’s robotic vehicle became the second privately built spacecraft to make a soft landing on the moon. It could soon be joined by two more private lunar landers. By Kenneth Chang ...

PDF files are ubiquitous in this cross-platform world, making it possible to view and share documents across a range of devices. While simply viewing or commenting on a PDF can be accomplished ...

Astronomy and astrophysics are the study of objects and phenomena that are found beyond our solar system. This combines theoretical simulations and observation with both terrestrial and space ...

Astronomy and planetary science are the study of objects and phenomena that occur beyond the Earth’s atmosphere. This includes investigating stars and their interaction with each other and the ...

Photo by Ann Ronan Pictures/Print Collector/Getty Images Print Collector Estimating distances in astronomy is challenging. Think of how hard it is to estimate the distance of someone pointing a ...

For the last month and change, you might've seen the headlines about the planetary alignment, or a planetary parade, going on in our solar system. And that's true. In January 2025, Venus, Mars ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

It's not just for astronomy that you'll find a headlamp useful, though. Even if you're a night-time runner, or someone who needs to take the dog for a walk after dark, these little light sources ...

February 26, 2025 • In 1967 Jocelyn Bell Burnell made a discovery that revolutionized the field of astronomy. She detected the radio signals emitted by certain dying stars called pulsars.

The best telescopes allow you to observe the full planetary parade more closely and give you a front-row seat to the total lunar eclipse on 13-14 March. The best telescopes unlock the wonders of ...