LearningBD

With fall now upon us, many of us will be dusting off our binoculars and telescopes ready for the longer nights this season brings. Earlier sunsets mean more stargazing hours, and we’ll start to see the return of some favorite celestial sights and deep-sky objects that we haven’t seen since before spring. Fall is also

Quick facts What it is: The nebula LHA 120-N44 Where it is: 160,000 light-years away, in the constellation Dorado When it was shared: Sept. 3, 2026 It looks like a gigantic hole punched through a cloud, but this spectacular new image from the Hubble Space Telescope captures something more complicated: a cosmic cycle of destruction

Scientists melted diamonds with a powerful laser to take some of the most precise measurements of the mineral’s elusive melting point — and found that previous experiments were off by more than 1,300 degrees Fahrenheit (700 degrees Celsius). It’s odd to think of diamond, the hardest natural material on Earth, melting — but melt it

Artificial intelligence (AI) algorithms that hunt for cancer may do a better job when they approach the analysis as if they were a human pathologist, a new study suggests. Many AI systems analyze preselected regions of a tissue sample, or they split a whole pathology slide into patches of a fixed size. By contrast, a

The Celestron StarSense Explorer DX 130AZ is a 5.1-inch (130mm) f/5 Newtonian reflector, one of many 130mm f/5 reflectors offered by Celestron. The DX 130AZ is also one of two 130mm StarSense Explorer variants, the other being a tabletop Dobsonian. The optical tube here rides on an alt-azimuth tripod instead and uses a 2-inch focuser,

An exceptionally well-preserved fossilized molar belonging to an adult Pacific mastodon has surfaced in a nature preserve near San Francisco. Upon first glance, the ancient tooth looked like an “oddly shaped rock” to geologists who were conducting fieldwork in the area, according to a statement from the Midpeninsula Regional Open Space (Midpen), which runs the