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Smart telescope, smarter deal — save $600 off the Unistellar eQuinox 2

Grab the Unistellar eQuinox 2 (the best smart telescope) for $2199 in this anti-Prime Day deal from BH Photo and Video

Finding PBHs Using The LSST Will Be A Statistical Challenge

With the recent first light milestone for the Vera Rubin observatory, it's only a matter of time before one of astronomy’s most long-awaited surveys begins. The Legacy Survey of Space and Time (LSST) is set to start on November 5th, and will scan the sky of billions of stars for at least ten years. One of the most important things it hopes to find is evidence (or lack thereof) of primordial black holes (PBHs), one of the primary candidates for dark matter. A new paper from researchers at Durham University and the University of New Mexico looks at the difficulties the LSST will have in finding those enigmatic objects, especially the statistical challenges, and how they might be overcome.

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Finding An Ocean On An Exoplanet Would Be Huge and the Habitable Worlds Observatory Could Do It

On Earth, water is so intertwined with life that our search for life on other worlds is essentially a search for water. When scientists find exoplanets around distant stars, a primary consideration is if they're in the stars' habitable zones where liquid water could persist on the planet's surface. The search for atmospheric biosignatures takes a backseat to the search for water.

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Astronomers trace mysterious blast of X-rays to 'Die Hard' star that refuses to perish (video)

Astronomers have traced a mysterious blast of X-rays to a star that, like a cosmic action hero, just refused to die.

Every living former NASA science chief opposes Trump's proposed budget cuts in letter to Congress

The letter warns that the proposed FY2026 budget would halt dozens of missions, gut future programs and threaten U.S. leadership in space science.

This is the star projector I’d pick for perfect views of the night sky

One of the best star projectors, the Pococo Galaxy Star projector, has 24% off this Amazon Prime Day.

This DJI Mini 4K drone is brilliant for beginners and it's $60 cheaper for Prime Day

We gave this entry-level DJI Mini 4K drone a fantastic five stars and now it's an even bigger bargain at 20% off for Prime Day.

Saturn makes its long-awaited return to the late night sky this week: Here's how to see it

The ringed giant had previously risen in the early morning and predawn hours as a "morning star."

Get up to 37% off with the Best Amazon Prime Day 2025 Lego deals

We've rounded up the best Amazon Prime Day Lego deals as the annual sales event is in full swing and there are plenty of discounts on offer.

Who is Mister Terrific, the super-smart hero aiding Lois Lane in James Gunn's 'Superman'

With a name like Mister Terrific, you better believe this mysterious masked man has a big reputation to live up to!

I search for deals for a living and I think I've found the best space-themed Amazon Prime Day Lego deal out there — it's 30% off

Unquestionably, one of the best Amazon Prime Day Lego deals available is 30% off the near-2000-piece Lego Technic NASA Lunar Roving Vehicle.

Hate Amazon? The best telescope for deep space is cheaper at Adorama this Prime Day

The telescope we've named best for deep space is cheaper than Amazon and comes with a free eyepiece set and carry case worth $210.

ISS astronaut spies sunglint from Lake Titicaca | Space photo of the day for July 9, 2025

The astronaut was able to capture the lake reflecting direct sunlight at the camera.

It's the cheapest we've ever seen! This Sony A1 camera deal saves over $1,400 — have we just found the best deal of Prime Day?

If you're looking for a Prime Day camera deal, then getting 22% off the powerhouse that is the Sony A1 could well be what you're after.

JWST finds cosmic monster ruling tiny early galaxy: Was it forged by black holes from the Big Bang?

The discovery of a monster-sized black hole in a pristine galaxy unspoiled by stellar death suggests growth via mergers between primordial black holes formed during the Big Bang.

The 'sound of the Big Bang' hints that Earth may sit in a cosmic void 2 billion light-years wide

The "Hubble tension," one of the most frustrating and lingering problems in science, could be solved if Earth and the Milky Way sit in a low-density void.

Best Amazon Prime Day telescope deals 2025

We've scoped out the best telescope deals available this year featuring top models from reputable retailers.

See interstellar comet 3I/ATLAS zoom through solar system in new telescope imagery (video)

The European Southern Observatory has captured the clearest images yet of the interstellar visitor 3I/ATLAS as it moves inward through the solar system.

Space Radiation

Radiation is one of the most dangerous and persistent challenges for astronauts during space missions, especially for long-duration travel beyond low Earth orbit (LEO), like missions to the Moon or Mars.

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