SETI Works Best When Telescopes Double-Check Each Other
A new paper recommends that future SETI experiments rely on simultaneous observations to eliminate background interference.
Earth is Hiding Another Planet Deep Inside
Earth's early history is marked by massive collisions with other objects, including planetesimals. One of the defining events in our…
Lucy Completes its First Flyby… and Discovers a Bonus Asteroid
NASA’s Lucy mission hits the jackpot on its very first asteroid flyby this week.
ESA’s Hera Mission is Bringing Two Cubesats Along. They’ll Be Landing on Dimorphos
In about one year from now, the European Space Agency will launch its Hera mission. Its destination is the asteroid…
Jupiter Looks Bizarre in Hubble's New Ultraviolet Image
Jupiter has gone pastel! Check out this ultra-cool image of Jupiter taken by the Hubble Space Telescope. This is a…
Old Data from Kepler Turns Up A System with Seven Planets
NASA's Kepler mission ended in 2018 after more than nine years of fruitful planet-hunting. The space telescope discovered thousands of…
Comet H2 Lemmon Brightens in Early November Ahead of Expectations
Discovered early this year, Comet C/2023 H2 Lemmon may approach naked eye brightness in November.
A Dwarf Galaxy That's Almost All Dark Matter
Thanks to new techniques, astronomers are mapping the Universe with more precision, finding galaxies with more and less dark matter.…
Devastating Clouds of Dust Helped End the Reign of the Dinosaurs
When a giant meteor crashed into Earth 66 million years ago, the impact pulverized cubic kilometers of rock and blasted…
A Collapsed Martian Lava Chamber, Seen From Space
Lava tubes and chambers attract a lot of attention as potential sites for bases on the Moon and Mars. They…