The sun is becoming active again as it enters Solar Cycle 25. This week, scientists' predictions of sunspots were proven via photos from astronomers around the world. Giant sunspot AR2786 can be viewed with proper filters and may create strong flares that reach Earth.

These next few days - November 27 and 28, 2020 - look for Earth's shadow and the Belt of Venus below the bright waxing gibbous moon.

We already know that Gale Crater on Mars used to hold a lake or series of lakes a few billion years ago. Now, NASA's Curiosity rover has found evidence for ancient giant floods that washed through the region as well.

Being indoors with other people is a recipe for spreading the coronavirus. But removing airborne particles through proper ventilation and air filtration can reduce some of that risk.

New guidance from the CDC says that 15 minutes of exposure – regardless of whether that occurs at one time – can result in transmission of the coronavirus.

The International Space Station orbits the Earth every 90 minutes To the eye alone, it looks like a bright, moving star. Various online tools can help you capture its fleeting pass in front of the moon or sun.

Use the moon to find the planet Mars on November 24, 25 and 26, 2020. Then use the planet Mars to find Mars and Uranus within the same binocular field in January 2021.

A new study of geologically young lava flows in Elysium Planitia suggests that Mars might still have residual volcanic activity below its surface. The finding may have implications for possible martian life.

SpaceX's satellites will populate the night sky, affecting how we observe the stars. And this is just the beginning of private satellite mega-constellations.

EarthSky Community members around the world are sharing their photos of this year's Leonid meteor shower. Beautiful! Thanks to all who contributed.