Viking Remembered: Celebrating the 40th Anniversary of the First Search for Life on Mars

Painting of a Viking lander on Mars, prior to launch. Image Credit: Charles Bennett/Lockheed Martin (Martin Marietta)

Iconic painting of a Viking lander on Mars, prior to launch. The sampling arm reaches into the foreground. Image Credit: Charles Bennett/Lockheed Martin (Martin Marietta)

July 20, 1976, will be forever remembered by space enthusiasts. On that day, Viking 1 became the first U.S. spacecraft to land on another planet—in this case, Mars (the USSR Venera […]

Solar Probe Plus Mission Moves Closer to 'Touching the Sun' in 2024

Artist's conception of the Solar Probe Plus spacecraft near the Sun. Image Credit: NASA/JHUAPL

Artist’s conception of the Solar Probe Plus spacecraft near the Sun. Image Credit: NASA/JHUAPL

The Solar System is a busy place, with spacecraft currently visiting most of the planets as well as some dwarf planets and comets. Akatsuki is at Venus, several rovers and orbiters are at Mars, the Juno spacecraft just reached Jupiter, […]

Astronomers Image Massive Exoplanet in Triple-Star System

Artist's conception of the star system HD 131399, with the planet HD 131399Ab in the foreground. Image Credit: Credit:
ESO/L. Calçada/M. Kornmesser

Artist’s conception of the star system HD 131399, with the planet HD 131399Ab in the foreground. Image Credit:ESO/L. Calçada/M. Kornmesser

Over the past couple decades, astronomers have been discovering a seemingly endless variety of exoplanets orbiting other stars. Some are rather similar to planets in our own Solar System, while others are more like […]

NASA's Juno Spacecraft Enters Orbit Around Jupiter, the 'King of Planets'

Artist's conception of Juno approaching Jupiter. Image Credit: NASA

Artist’s conception of Juno approaching Jupiter. Image Credit: NASA

Jupiter has often been referred to as the King of Planets, and for good reason, as it is a massive gas giant, much larger than Earth and the largest planet in our Solar System. It is more than 2.5 times as massive as all the other […]

Does Pluto Have a Subsurface Ocean? New Research Says Probably

The discovery of huge faults on Pluto provides evidence for a possible liquid water ocean beneath the ice crust. Image Credit: NASA/JHUAPL/SwRI

The discovery of huge faults on Pluto provides evidence for a possible liquid water ocean beneath the ice crust. Photo Credit: NASA/JHUAPL/SwRI

So-called “waterworlds” have been found to be surprisingly common in the Solar System—small icy moons which have ice crusts but oceans of liquid water below the surface. These include Jupiter’s moons Europa and […]

'Before This Decade Is Out': 55 Years Since the Speech Which Committed America to the Moon (Part 2)

Through a combination of enthusiasm for space exploration and political need, President John F. Kennedy's speech on 25 May 1961 defined his short-lived administration. Photo Credit: NASA

Through a combination of enthusiasm for space exploration and political need, President John F. Kennedy’s speech on 25 May 1961 defined his short-lived administration. Photo Credit: NASA

Fifty-five years ago, this week, John Fitzgerald Kennedy—35th President of the United States—gave a speech before Congress which, arguably, defined not only his administration, but also the […]

'Before This Decade Is Out': 55 Years Since the Speech Which Committed America to the Moon (Part 1)

On 25 May 1961, President John F. Kennedy made one of the most remarkable speeches in U.S. political history, by setting his nation on a course to land a man on the Moon. Photo Credit: NASA

On 25 May 1961, President John F. Kennedy made one of the most remarkable speeches in U.S. political history, by setting his nation on a course to land a man on the Moon. Photo Credit: NASA

When we think of heroes in the early Space Age, our minds are naturally drawn to the likes […]

Asteroid-Bound OSIRIS-REx Arrives at NASA Kennedy for September Launch

OSIRIS-REx uncrating at the Payload Hazardous Servicing Facility at NASA Kennedy. Credit: NASA/Dimitri Gerondidakis

OSIRIS-REx uncrating at the Payload Hazardous Servicing Facility at NASA Kennedy. Credit: NASA/Dimitri Gerondidakis

NASA’s first asteroid sampling spacecraft, OSIRIS-REx, arrived at the Kennedy Space Center in Florida on Friday, May 20. The spacecraft is set to undergo a series of tests and final preparations to ready it for a September launch to an […]

Back to the Moon? New House Bill Defunds NASA's Asteroid Redirect Mission

Artist's conception of the Asteroid Redirect Mission. The new House bill directs NASA to bypass this mission and return to the Moon instead, before going to Mars. Image Credit: NASA

Artist’s conception of the Asteroid Redirect Mission (ARM). The new House bill directs NASA to bypass this mission and return to the Moon instead, before going to Mars. Image Credit: NASA

Sending human astronauts to Mars is a dream shared by many, but there are still challenges to overcome and the question of just […]

Jupiter's Moon lo Formed Under Unique Processes, New Study Suggests

An impressive image of Jupiter's moon Io, as seen from NASA's Galileo spacecraft from a distance of approximately 600,000 km. A volcanic eruption is easily seen at the moon's upper limb, rising almost 140 km above the surface. A new study has shown that these volcanic eruptions play an integral role in the formation of mountains on the moon's landscape as well. Image Credit: Galileo Project, JPL, NASA

An impressive image of Jupiter’s moon Io, as seen from NASA’s Galileo spacecraft from a distance of approximately 600,000 km. A volcanic eruption is easily seen at the moon’s upper limb, rising almost 140 km above the surface. A new study has shown that these volcanic eruptions play an integral role in the formation […]