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Schematic of graphene/boron nitride superconductor/insulator: The material is composed of three 2D layers of graphene (gray) sandwiched between 2D layers of boron nitride (red and blue) to form a repeating pattern called a moiré superlattice. Superconductivity is indicated by the light-green circles, which represent the positive charge sitting on each unit cell of the moiré superlattice.

Upper (left) and lower photomultiplier tube arrays are prepared for LZ at the Sanford Underground Research Facility in Lead, South Dakota.

Investigated region on Ryugu.

Raising crops on Mars is far easier in science fiction than it will be in real life: The Red Planet is an inhospitable world. Among other challenges, subzero temperatures mean water can persist on the surface only as ice, and the planet's atmosphere offers little protection to plants (or people) from the Sun's radiation.

Hubble Peers at Galactic Cherry Blossoms

Wildfire Sparks in Sugarcane Fields on the Island of Maui

The change in the average shape of voids caused by Doppler distortions and the effects of dark energy and curvature.

A team of engineers at NASA's Jet Propulsion Laboratory in Pasadena, California, install the legs and wheels - otherwise known as the mobility suspension - on the Mars 2020 rover. The imagery for this accelerated time-lapse was taken on June 13, 2019, from a camera above the Spacecraft Assembly Facility's High Bay 1 clean room.

NASA's Curiosity Mars rover can be seen in this image taken from space on May 31, 2019, by the HiRISE camera aboard the Mars Reconnaissance Orbiter. In the image, Curiosity appears as a bluish speck.