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Images of shadows cast by jet contrails
Jet contrail shadows may appear to be cast by a low-altitude bright light shining upwards. In fact, this shadow is normally cast on clouds below the jet and its contrail.
February 21, 2021
Mount Etna erupts
Italy’s Mount Etna has been erupting this week, spewing fountains of lava and ash into the sky.
February 19, 2021
Hunkering down in winter weather
Snow, ice and cold temperatures wreak havoc across much of the United States in February.
February 16, 2021
Morning moongazer
On a cold morning in Norway this week, a look at the waning moon in a daylit sky.
February 5, 2021
The Mars-Uranus conjunction of January 2021
Mars and Uranus passed close to each other in a conjunction on January 21, 2021. Photos from the event captured by EarthSky readers available here.
January 23, 2021
Venus sinks toward the sun
Venus has been the "morning star," shining brightly near the horizon just before sunrise. Photographers are capturing pictures in January 2021 and sharing those images with EarthSky.
January 18, 2021
SDO spies its 1st lunar transit of 2021
NASA's Solar Dynamics Observatory has been continuously observing the sun since its launch in 2010. From its vantage point above Earth, it sees the moon pass in front of the sun 2 to 5 times a year.
January 14, 2021
Planetary trio: Photos of Mercury, Jupiter, Saturn
The planetary trio has come and gone, but some in EarthSky's community captured photos!
January 14, 2021
View from space: An outburst from Popocatépetl
Popocatépetl volcano near Mexico City has been erupting since January 2005. On January 6, Mexico’s National Center for Prevention of Disasters, which continuously monitors the volcano, warned people not to approach due to an outburst that caused falling ash and rock fragments.
January 8, 2021
