Artist’s conception of the SpaceX Crew Dragon capsule atop a Falcon 9 rocket during launch.
Image: SpaceX
Year In ReviewWe look back at the best, worst, and most significant moments of the year, and look forward to next year.   

The past year saw tremendous advancements in humanity’s capacity to explore space, and 2019 promises to be no different. From mysterious Kuiper Belt objects and Martian probes to historic rocket launches and daring efforts to touch the Sun, here’s what the next 12 months have in store.

New Horizons will encounter Ultima Thule

The year 2019 will start with a bang as NASA’s New Horizons visits Ultima Thule, a mysterious Kuiper Belt object located 4 billion miles (6.5 billion kilometers) from the Sun. At 12:33 a.m. EST on January 1, the spacecraft will zoom past Ultima Thule at speeds reaching 31,500 miles per hour (50,700 kilometers per hour), snapping as many pics as possible at resolutions between 98 to 230 feet (30 to 70 meters) per pixel.

Advertisement

Artist’s impression of New Horizons flying past Ultima Thule. This image appears to exaggerate how close the spacecraft will get—its current trajectory will put it at within 2,200 miles (3,500 kilometers) of the distant Kuiper Belt object.
Illustration: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

The historic close approach to Ultima Thule, also known as 2014 MU69, will be the first ever flyby of a Kuiper Belt Object. During the flyby, we’ll learn if Ultima Thule is a close binary system, a contact binary (in which two pieces are touching), or something else entirely. The object, or objects, is around 19 miles in diameter (30 kilometers) and irregularly shaped. Using its many onboard instruments, New Horizons will also map the object’s surface geology to learn how it formed, measure its surface temperature, search for signs of comet-like activity (like melting ice), among other mission objectives.

Advertisement

Rovers romping on the Moon

The Moon should receive at least a pair of new robotic visitors in 2019.

China’s Chang’e 4 lander and rover, which launched on December 8, 2018, are expected to reach the surface of far side of the Moon on January 3, or possibly earlier. The landing site is the 110-mile-wide (180 kilometers) Von Kármán crater, a lunar impact crater in the southern hemisphere. Because it’ll be on the Moon’s far side, CE-4 will communicate with Earth via China’s Queqiao satellite, which launched in May.

Advertisement

Conceptual image of China’s rover on the moon.
Image: NAOC

If successful, the mission will involve the first soft landing and inspection of the Moon’s far side, according to China’s National Defense Science and Technology Bureau. The lander and six-wheeled rover will measure the temperature of the lunar surface, analyze lunar rocks and dust, and study cosmic rays, among other things. The mission will also determine whether the region is quiet enough from human technological activity to build a deep-space radio telescope. The mission should last for at least three months.

Advertisement

A prototype of the Chandrayaan-2’s rover undergoing tests.
Image: ISRO

At some point during the second half of 2019, India will launch its own rover to the Moon as part of the Indian Space Research Organization’s GSLV-F10/Chandrayaan-2 Mission. A six-wheeled rover will move around a landing site near the Moon’s south pole, observing the lunar surface and transmitting data back to the Earth. Above it, the Chandrayaan-2 satellite will collect scientific information about lunar topography, minerals, and the moon’s practically non-existent atmosphere, while also searching for signs of water-ice.

Advertisement

And who knows, perhaps a team participating in the Lunar XPrize will finally land a rover on the Moon, but we’ll believe it when we see it.

Hayabusa2 will collect samples from the Ryugu asteroid

At some point in early 2019, hopefully in late January, Japan’s Hayabusa2 will extract surface samples from the Ryugu asteroid. JAXA is still trying to find the perfect spot for Hayabusa2 to do its work, as flat regions on this space rock are proving hard to come by.

Advertisement

An incredible shot of the Ryugu asteroid, taken on June 26 by the Hayabusa2 probe.
Image: JAXA, University of Tokyo and collaborators

In December 2019, the probe will take its last samples and begin its journey back to Earth. Should all go well, it’ll mark the first time a probe has extracted samples from an asteroid and returned them for analysis.

Advertisement

Commercial crew test flights—finally

NASA’s contract with Russia ends in April, so it’s imperative that the space agency find another means to deliver its astronauts to space. The private sector is on the case, and 2019 promises to be the year in which the United States finally restores its ability access the International Space Station on its own—something it hasn’t been able to do since the Space Shuttle program.

Advertisement

On January 17, SpaceX, in cooperation with NASA’s commercial crew program, is set to use a Falcon 9 rocket to launch an uncrewed Crew Dragon spacecraft to the ISS. Should this test go well, a crewed mission could happen as early as June 18; NASA astronauts Doug Hurley and Bob Behnken have been tapped for this mission.

Artist’s impression of the CST-100 Starliner.
Image: Boeing

Advertisement

In March, a United Launch Alliance Atlas 5 rocket will launch Boeing’s first CST-100 Starliner—also uncrewed—to the ISS. A subsequent crewed test, with Boeing astronaut Chris Ferguson and NASA astronauts Eric Boe and Nicole Mann, could happen in August, according to NASA.

Test launch of a Blue Origin rocket.
Image: Blue Origin

Advertisement

Jeff Bezos’s space firm Blue Origin is also expected to conduct both crewed and uncrewed missions in 2019 with its New Shepard suborbital vehicle, with dates still to be determined.

Opportunity Rover, won’t you please call home?

NASA’s Opportunity rover has been silent since June 10, when a global-scale dust storm knocked the probe into a hibernation mode from which it hasn’t been able to awake.

Advertisement

The sleeping—and possibly dead—Opportunity rover as seen from space. It’s the tiny white dot in the middle of the square.
Image: NASA/JPL-Caltech/Univ. of Arizona

Mission controllers have been listening for the rover over a broad range of times and frequencies using the Deep Space Network (DNS) Radio Science Receiver, but to no avail. NASA will keep trying with its “sweeps and beeps” in the coming weeks and months, but should Opportunity fail to signal home, mission controllers might have to finally and regretfully declare the 15-year mission over.

Advertisement

InSightful drilling on Mars

The Opportunity news is sad, but at least Curiosity is still chugging along. There’s also NASA’s InSight to consider, which landed on Mars in late November. The stationary probe should start drilling into the Martian surface in late January or early February.

Advertisement

An InSight selfie.
Image: NASA/JPL-Caltech

InSight team members will finish deploying the seismometer in January and monitor for marsquakes. Around this time, the probe will use its robotic arm to setup the heat probe. The purpose of the mission is to enhance our understanding of planetary formation and the inner geology of Mars. To that end, InSight will use its instruments to measure seismic activity, temperature, and air pressure.

Advertisement

Swooping spacecraft

Get ready for increasingly picturesque photos of Jupiter and the Sun, courtesy of the Juno probe and the Parker Solar Probe.

Advertisement

A glorious shot of Jupiter’s swirling cloud tops.
Image: NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstädt/ Seán Doran

NASA’s Juno spacecraft is scheduled for more perijoves in 2019—a perijove being an object’s closest orbital approach to Jupiter’s center. Juno’s 18th perijove will happen on February 17 and its 19th on April 6. Juno has already provided extraordinarily detailed shots of Jupiter’s cloudtops, but the probe is getting increasingly closer to the majestic gas giant.

Advertisement

A photo of the Sun’s corona, or outer atmosphere, as observed by the Parker Solar Probe on December 8, 2018
Image: NASA/Naval Research Laboratory/Parker Solar Probe.

Meanwhile, the Parker Solar Probe will continue on its historic, yet ultimately doomed, mission to “touch the Sun.” Its second and third perihelions—the points at which it’s closest to the Sun during its orbit—are scheduled for April 4 and September 1. On December 26, the Parker probe will get its second gravity assist from Venus. These flybys will result in important new data about the Sun, such as the nature of its corona and its ability to churn out solar storms.

Advertisement

Commemorations for the 50th anniversary of the Apollo 11 moon landing

July 16, 2019 will be the 50th anniversary of the Apollo 11 moon landing. Expect tons of media coverage in coming months.

Advertisement

Apollo 11 50th Anniversary Commemorative Coins.
Image: U.S. Mint/NASA

A number of events have been scheduled to commemorate this historical milestone, including Apollopalooza 2019 (a celebration at the Rockies Air and Space Museum in Denver), the Apollo Celebration Gala at the Kennedy Space Center, and the Summer Moon Festival in Wapakoneta, Ohio. Also, the U.S. mint will release Apollo 50th anniversary commemorative coins on January 24, which look pretty awesome.

Advertisement

Launch of CHEOPS space telescope

The European Space Agency is planning to launch the CHEOPS space telescope at some point in October or November. Once in orbit, this space-based telescope will hunt for extrasolar planets, particularly those in the Earth-to-Neptune range in terms of size.

Advertisement

Artist’s impression of CHEOPS.
Image: ESA

CHEOPS will lift off from a Soyuz rocket, and settle into an orbit about 430 miles (700) kilometers above Earth. CHEOPS will use the tried-and-true transit method of detection, scanning stars for signs of exoplanets passing in front of them. CHEOPS was originally supposed to launch in 2015, so this is long overdue.

Advertisement

Celestial eye candy

For you sky watchers out there, 2019 will feature some interesting astronomical phenomena.

Advertisement

A total lunar eclipse on January 21 will be visible to observers in North America, South America, the eastern Pacific Ocean, the western Atlantic Ocean, and extreme portions of Europe and Africa. On July 2, a total solar eclipse will be visible to observers in parts of the southern Pacific Ocean, central Chile, and central Argentina.

Image: NASA

Advertisement

Three full supermoons will happen in 2019: on January 21, February 19, and March 21. Supermoons happen when the Moon is at its closest approach to Earth, making it look slightly larger and brighter than usual.

Jupiter will be at opposition, or its closest approach to Earth, on June 10, at which time it’ll look big and bright. Uranus will do the same on October 27.

Advertisement

On November 11, we’ll see a rare transit of Mercury across the Sun. This doesn’t happen very often, and won’t occur again until 2039. By applying an approved solar filter to a telescope, amateur astronomers will be able to see the tiny black disc of Mercury move across the backdrop of the Sun. This transit will be visible to observers in eastern North America, Mexico, Central America, South America, and parts of Europe, the Middle East, and Africa.