Posts by 

Eleanor Imster

What causes an aurora, the northern or southern lights?

The aurora, or northern and southern lights, occur when charged particles from the sun interact with Earth's magnetic field. Read more here.

CME strikes Solar Orbiter before Venus flyby

On September 4, 2022, during a close flyby of Venus, Solar Orbiter was hit by a large CME. Fortunately, the spacecraft was unharmed.

Webb and Hubble see the universe differently

Webb and Hubble images of M74 - the Phantom Galaxy - show how the 2 telescopes "see" differently because they observe at different wavelengths.

Drought around the world, August 2022, in dramatic images

Drought is crippling many regions of the world in 2022, from the US and Europe to China and the Horn of Africa. As waters recede, artifacts are appearing.

Shrinking Lake Mead reveals bodies and boats

Lake Mead water levels continue to drop precipitously. People are finding things hidden underwater for decades, including human bodies.

Mysterious pink glow in Australia … not aliens

Residents of the Australian town of Mildura thought they were being invaded by aliens Wednesday night, due to a mysterious pink glow in the sky.

We love sunflowers! Your best photos

We love sunflowers at EarthSky! You can't look at a sunflower and feel sad. Here are some great photos you shared with us. Smile!

Record-breaking heat in the UK

Record-breaking heat was recorded in the UK yesterday, where temperatures reached 40.2°C (104.4°F) for the first time since record-keeping began.

What is a fairy ring?

Have you ever noticed mushrooms growing in a big circle? It's known as a fairy ring. How does it happen?

Mars rover measures key life ingredient

For the 1st time, scientists measured the amount of organic carbon in rocks on Mars. NASA's Curiosity rover analyzed samples taken from ancient mudstones.