The "dunes" can be found at an altitude of around 62 miles in the upper part of an atmospheric layer known as the mesosphere.
Since September last year, hundreds of fires have burned millions of hectares in Australia, leaving at least 28 people dead.
The Amazon rainforest is important to the global climate because of its role in storing vast amounts of carbon dioxide.
The unusual phenomenon was generated by thunderstorms in the Australian region.
Scientists at the EU's Copernicus Atmosphere Monitoring Service who track the size of the ozone hole in the Antarctic reported that it is expected to be atypically small this year.
NASA's Image of the Day shows an interesting circular cloud formation, taken above the Pacific Ocean on April 4, 2019 by an astronaut in the ISS.
The strength of our planet's magnetic field was 10 times lower than it is today.
The control over the ionosphere has become an ambitious project for some military forces.
Polar mesospheric clouds form as ice crystals on the remnants of meteors in the upper atmosphere.
If production continues, it could undermine our ozone layer's fragile recovery.
The garlic bread was sent into the stratosphere attached to a weather balloon.
Tiangong-1 is losing its fight with Earth's incredible atmosphere.
The launch created an extremely rare, perfectly circular shock wave.
The thruster devours molecules it plucks from the air.
An atmosphere is basically a giant blanket that can protect a planet from a star's barrage of dangerous radiation.