Why are sunspots black? According to astronomers, it may be a big, cosmic optical illusion.
NASA's Juno spacecraft skimmed close above the surface of icy Europa Thursday (Sept. 29), capturing a view of the crust that is just the start of our new study of this ocean world.
NASA's Jupiter explorer Juno has made a close flyby of the giant planet's ice-covered moon Europa, providing the most detailed views of this strange world in more than twenty years.
Stars differ in size, luminosity and distance from us. We discuss how astronomers measure these three values to understand the three-dimensional sky.
The James Webb Space Telescope and its older counterpart Hubble photographed the impact of NASA's asteroid-smashing DART probe into the space rock Dimorphos on Monday (Sept. 26).
NASA, SpaceX and Hubble officials will hold a press conference today (Sept. 29) to discuss "potential commercial space opportunities for NASA science missions," and you can listen live.
The first deep-field image revealed from the James Webb Space Telescope hid a wealth of treasure including a sparkling galaxy that could host the universe's first stars.
NASA's Juno probe is all set for a close flyby of Jupiter's icy moon Europa on Thursday (Sept. 29), which could possibly reveal tremendous new insights into Europa's crust and interior.
New research suggests that a strange 'ripple' is causing the Milky Way's stars to vibrate out of step, and an ancient collision with Sagittarius may be to blame.
More than four years after DART's collision with the asteroid Dimorphos, Europe's Hera mission will help validate the space rock deflection experiment.
Reference Planet Venus will have a flurry of spacecraft visit it in the next few years as scientists seek to learn more about the volcanic, lava-filled planet.
Hurricane Ian has grown into an extremely dangerous Category 4 storm above the warm waters of the Gulf of Mexico ahead of Florida landfall.
Lunar glass reveals that large meteorite strikes on Earth, like the impact that killed the dinosaurs, were not isolated events.
Astronomers have discovered the chemical traces of the universe's earliest stars that died in super-supernova explosions.
Since 2014, SOFIA has been cruising through the night skies around the world, looking at the cosmos, but that mission ends this week.
The repeating blasts of a fast radio burst from a galaxy like our own is challenging a proposed explanation for these fleeting but energetic bursts of radio waves.
Reference Lunar eclipses occur when Earth blocks the sun and casts a shadow over the surface of the moon. We explore the different types of lunar eclipses here.