A new space telescope named Euclid, an ESA (European Space Agency) mission with important contributions from NASA, is set to launch in July to explore why the universe's expansion is speeding up. Scientists call the unknown cause of this cosmic acceleration "dark energy." By May 2027, NASA's Nancy Grace Roman Space Telescope will join Euclid to explore this puzzle in ways that have never been possible before.

"Twenty-five years after its discovery, the universe's accelerated expansion remains one of the most pressing mysteries in astrophysics," said Jason Rhodes, a senior research scientist at NASA's Jet Propulsion Laboratory in Southern California. Rhodes is a deputy project scientist for Roman and the U.S. science lead for Euclid. "With these upcoming telescopes, we will measure dark energy in different ways and with far more precision than previously achievable, opening up a new era of exploration into this mystery.

At this very moment, eleven robotic missions are operating in orbit or on the surface of Mars, more than at any point during the past 60 years. These include the many orbiters surveying the red planet from orbit, the handful of landers and rovers, and one helicopter (Ingenuity) studying the surface.

In the coming years, many more are expected, reflecting the growing number of nations participating in the exploration process. Once there, they will join in the ongoing search for clues about the planet's formation, evolution, and possible evidence that life once existed there.

However, there's also the mystery concerning the origin of Phobos and Deimos, Mars' two satellites. While scientists have long suspected that these two moons began as asteroids kicked from the Main Belt that were captured by Mars' gravity, there is no scientific consensus on this point.