Planetary alignments happen more often than you might think. Here’s why this one is special.

At the start of the year, Earth will quietly reach a milestone in its orbit around the sun. Known as perihelion, this is the moment when our planet is closer to the sun than at any other point in the year.

If you’ve been following astronomy headlines, you might have noticed a curious new arrival to the neighborhood: Comet 3I/ATLAS. It’s not just another “regular” comet from the outer solar system–this one’s an interstellar visitor, meaning it was born around another star entirely.

A pair of once-in-a-lifetime comets are rocketing through our skies right now, and it's a rare treat because they won't be back for hundreds of years. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), look similar. Both comets have already had their brightest nights on Oct. 20 and Oct. 21. But if you're out and about this final week of October, you can still spot these green gaseous globes and their streaming tails.

Metallicity is a fundamental part of the Universe. The Big Bang created mostly hydrogen, the simplest and lightest element, and a tiny bit of helium, the second lightest element. Those elements gather together in large quantities to form stars. For rocky planets to form, stars had to form first.

A new study led by UNLV scientists sheds light on how planets, including Earth, formed in our galaxy—and why the life and death of nearby stars are an important piece of the puzzle.

There are an estimated 23 active rocket launch facilities across the globe, but a massive increase in launch requests from the satellite industry is spurring demand for more capacity, especially when it comes to rockets.

Federal investment in science and engineering research plays a key role in growing our economy and driving innovation in Nevada. Cuts and disruptions to this funding threaten our students and our future workforce and economic base.