The solar system’s smallest planet is one of its most interesting.

The planet Mercury stands 25° east of the Sun. View the solar system’s smallest planet, along with the crescent Moon, in the evening sky.

The Red Planet passes through M44, also known as the Beehive Cluster, a bright group of young stars in Cancer the Crab.

Giovanni Passalacqua from Ragusa, Sicily, Italy A waning crescent Moon hangs less than 3° from Jupiter in western Leo before dawn on Oct. 6, 2026, hours before it occulted the planet for viewers in No...

Integrity served as a deep-space testbed for technology that could aid cancer patients, serve remote clinics, and supercharge the internet.

With no Moon in the sky, it’s the perfect time to look for the so-called false dawn before sunrise: the zodiacal light.

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have captured the first time-resolved, medium-resolution spectra of WISE J085510.83-071442.5, an ultracool brown dwarf just 7.4 light-year...

GIMLI will probe the Marius Hills Pit for a hidden lava tube that could shelter astronauts and reveal the Moon's volcanic past.

This NASA/ESA/CSA James Webb Space Telescope Picture of the Month features galaxies in incredible detail that have been warped and multiplied like they’ve stepped into a house of mirrors.

Check out our meteor shower animation to find out how, where, and when to see these shooting stars.

The European Space Agency-led Solar Orbiter spacecraft has flown through an S-shaped kink known as a ‘switchback’ in the solar wind’s magnetic field. By fingerprinting the elusive particles within the...

Also at opposition this week, asteroid 2 Pallas is passing near a field star with similar brightness to the main-belt world itself.

This artist’s concept depicts the proposed design for NASA’s PRobe far-Infrared Mission for Astrophysics (PRIMA), which was selected by the agency in

NASA’s Curiosity Mars rover captured this view looking back at the floor of Gale Crater, with the crater’s rim visible in the distance, on Sept. 5, 2026, the

NASA’s Curiosity Mars rover captured this panorama of sunrise illuminating distant, wind-carved features called yardangs on Aug. 11, 2026, the 4,982nd Martian

A visualization of a dark Moon eclipsing the Sun is marked with handwritten notes in this April 6, 2026, screenshot from an Artemis II crew member's tablet.

We explore how we observe changing worlds and skies, from the dark skies above Paranal and the shifting waters of the Venetian Lagoon to the photograph that helped launch a new era of astronomy. Acros...