When you wish upon a star (dune)… ⭐️
These windswept sand formations, known as star or pyramid dunes, are a distinctive feature of the Sahara and have sharp multidirectional ridges. They form when the wind transports and deposits fine sand, forming mounds of sediment.
NASA’s favorite (habitable) planet. 🌎💚 Studying Earth from ground to orbit.
- A @Space_Station astronaut captured this photo while orbiting over northern Africa on November 10, 2024. More:
- NASA Earth repostedA NASA-sponsored team developed an open-source tool that uses machine learning to speed up identification of potential flash floods, delivering near real-time insights to help communities respond faster. Explore how this data-driven tech tracks extreme weather and produces
- Breakups are hard 💔 Unless it’s stuff breaking up in Earth’s atmosphere. Then it’s just cool! A @Space_Station astronaut captured an object breaking up in the atmosphere on April 27. It could have been part of a rocket, satellite, other human-made space debris, or a meteor.
- Seems like everyone’s watching Fiji right now… 👀🏝️ Even @NASA satellites! NASA has a fleet of more than 20 satellites that study our home planet and capture images — including this one of the islands of Fiji, which are home to a certain iconic villa.
- Dengue, which is spread by mosquitoes, is a serious health threat in Puerto Rico and a growing concern in parts of the U.S. 🦟 Scientists are using @NASA data to track the environmental conditions linked to dengue and improve forecasts of dengue risk in Puerto Rico.
- Happy summer solstice ☀️ Today marks the start of astronomical summer in the Northern Hemisphere and the longest stretch of daylight. It’s the day the Northern hemisphere is most tilted toward the Sun. go.nasa.gov/4eRPura
- NASA Earth repostedNASA has selected the DAPHNE mission to study how Earth’s atmosphere drives space weather, helping improve predictions that protect tech and astronauts. Twin satellites will launch no earlier than 2029. More: go.nasa.gov/4vf3LE5
- A NASA sensor is helping firefighters stay safe — and gathering critical science data! 🔥👨🚒 NASA’s FireSense project installed the sensors on fire bulldozers to alert the firefighters driving them when their surroundings are getting too hot.This work is part of a collaboration between @NASA FireSense and @ALForestryComm. The teams are planning to add another NASA science instrument to the fire dozers to measure temperature, spread rate, flame length, fire convection, and gas emissions.
- Watch the colors change. This timelapse of Landsat and Sentinel-2 satellite images shows the evaporation process at Chile’s Salar de Atacama, the country's largest salt flat and a major source of the global lithium supply.
00:00 - NASA Earth repostedEven from afar, wildfires are creating unhealthy air. A NASA-supported study found wildfires have worsened ground-level ozone, or smog, across the U.S., with larger changes in the West and Midwest. Wildfires can increase surface ozone thousands of miles away from active fires.
00:00 - These tiny birds follow their noses to find prey – even if it leads them into an energy-sapping crosswind. The finding comes from a @NASA-funded study that tracked Mediterranean storm petrels with lightweight GPS sensors. 🐦⬛ More: go.nasa.gov/4aSQAk3
- Sometimes doing science involves taking a hike 🥾 @NASA @USGS GEMx scientists hiked in California to study minerals near Earth’s surface. The data they collected on the ground will help verify similar measurements from an instrument on an aircraft and the @Space_Station.
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