NASA’s James Webb Space Telescope Now Fully Assembled for 2021 Launch

View od the fully assembled James Webb Space Telescope. The sunshield and unitized pallet structures (UPSs) that fold up around the telescope for launch, are partially deployed to enable telescope installation. Photo Credit: NASA/Chris Gunn

NASA’s James Webb Space Telescope (JWST) just took another big step towards completion, as the two halves it was […]

Shrinking Triton: Remembering Voyager 2's Encounter With Neptune, 30 Years On (Part 4)

Neptune, as seen by Voyager 2 in 1989. No other missions have yet returned to this enigmatic world. Photo Credit: NASA/JPL

READ Part 1, Part 2 and Part 3 of AmericaSpace’s Neptune 30th anniversary commemorative feature.

Thirty years ago today, NASA’s Voyager 2 spacecraft swept silently over the royal-blue clouds of Neptune at […]

Wild World: Remembering Voyager 2's Encounter With Neptune, 30 Years On (Part 3)

The Great Dark Spot and Bright Companion, together with the chevron-like “Scooter” are visible in this Voyager 2 image of Neptune. Photo Credit: NASA

READ Part 1 and Part 2 of AmericaSpace’s Neptune 30th anniversary commemorative feature.

Thirty years ago this weekend, NASA’s Voyager 2 spacecraft swept silently above Neptune’s royal-blue cloud-tops and […]

Camera on Hubble Space Telescope Currently Offline Due to Hardware Problem

The Hubble Space Telescope in orbit. Photo Credit: NASA

NASA has temporarily suspended operations of Wide Field Camera 3 on the Hubble Space Telescope due to a hardware problem, it was reported yesterday.

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Hubble Space Telescope Enters Safe Mode After Gyro Failure

The Hubble Space Telescope. Image Credit: NASA

Update – October 8, 2018: NASA has released a statement about the situation with Hubble.

“NASA is working to resume science operations of the Hubble Space Telescope after the spacecraft entered safe mode on Friday, October 5, shortly after 6:00 p.m. EDT. Hubble’s instruments still are […]

Hubble and Kepler Telescopes May Have Just Found The First Exomoon, 8000 Light-Years Away

Artist’s concept of what the Kepler-1625b planet-moon system might look like. Image Credit: Dan Durda

Exoplanets – planets orbiting other stars – have been found by the thousands now, with many more to come. But what about exomoons? So far there haven’t been any confirmed yet, and they are much more difficult to […]

New Evidence For Water Vapor Plumes on Europa Discovered In Old Galileo Mission Data

Illustration of the Galileo probe at Europa in 1997, and how the plume disrupted the moon’s magnetic field. Image Credit: NASA/JPL-Caltech/Univ. of Michigan

For decades, Jupiter’s moon Europa has fascinated scientists and the public alike after it was learned that a global water ocean lies beneath the icy crust. Could there be life […]

Remembering John Young, an 'Astronaut's Astronaut', Gone at Age 87

Apollo 16 Commander John Young gazes across the rugged terrain during humanity’s fifth piloted lunar landing. Photo Credit: NASA

John Young, one of only 12 humans to have walked the dusty surface of the Moon, one of only three of mankind’s sons to have traveled twice to lunar distance, the only astronaut to […]

New Horizons' Next Target May Resemble Rosetta's Comet 67P Or Be A Binary Pair

One artist’s concept of Kuiper Belt object 2014 MU69, the next flyby target for NASA’s New Horizons mission. This binary concept is based on telescope observations made at Patagonia, Argentina on July 17, 2017 when MU69 passed in front of a star. New Horizons theorize that it could be a single body with […]

First Exomoon Found? Astronomers Optimistic But Urge Caution

Artist’s conception of a large Earth-like exomoon orbiting a giant gaseous exoplanet. Image Credit: Avatar/20th Century Fox

Exoplanets are being found so frequently now that they have become commonplace. But what about exomoons? As might be expected, they are much harder to detect, being typically much smaller than most planets. There have been […]