A composite image - made of photos acquired over 500 days - showing the waxing and waning of Venus, and the changing size of the planet's visible disk, as it orbits the sun one step inward from Earth.
The Venus rover challenge - called "Exploring Hell" - received a great response from countries around the world. NASA said the design ideas submitted will help advance the final design of a mechanical rover that might one day explore the hellish surface of Venus.
Look for the star Altair in the east on July evenings. You'll recognize it for the 2 fainter stars on either side of it ... as if the 3 were "walking the Milky Way hand in hand and three abreast."
The Summer Triangle consists of 3 bright stars - Vega, Deneb and Altair - in 3 different constellations. Deneb also represents the tail of Cygnus the Swan.
In recent years, black hole mergers in our universe have been detected via ripples in spacetime known as gravitational waves. Now, for the first time, astronomers believe they've observed visible light from a black hole merger, in a peculiar 3-black-hole system.
See the layers of dust set against this South Carolina sunset? That dust came from Africa's Sahara Desert. It traveled across the Atlantic Ocean this month to cause dusty skies across the U.S. South and into Texas.
Astronomers just announced the most massive quasar yet known in the early universe. Its monster central black hole has a mass equivalent to 1.5 billion of our suns. The object has been given a Hawaiian name, Poniua'ena.
Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.