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Subaru Telescope sheds light on Jupiter Trojan asteroids’ color mystery

Observations conducted with the Subaru Telescope and its first-generation wide-field camera, Suprime-Cam, have revealed new insights into the relationship between the color and size of Jupiter Trojan asteroids.

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Major new telescope on Chilean summit opens window on universe

Thirty-four years after Cornell University scientists first conceived it, the Fred Young Submillimeter Telescope (FYST) now rises above the Atacama Desert, near the summit of Cerro Chajnantor in Chile. FYST will help answer some of the most important questions in astronomy, including how the universe works, the nature of dark energy and dark matter, how […]

Parachutes: A vital part of Artemis II’s trip home

As the Orion spacecraft hurtles home, friction caused by reentry into Earth’s atmosphere will drastically decrease its speed from a potential 25,000 miles per hour (40,000 kilometers per hour).

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Artemis II’s grand moon finale is almost here with a Pacific splashdown to cap NASA’s lunar comeback

Their dramatic grand finale fast approaching, Artemis II’s astronauts aimed for a splashdown in the Pacific on Friday to close out humanity’s first voyage to the moon in more than half a century.

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Peculiar core-collapse supernova breaks the mold with a long, dim plateau

Astronomers from the Chinese Academy of Sciences (CAS) have employed the Lijiang 2.4-m telescope to perform optical photometric and spectroscopic observations of a core-collapse Type IIP supernova designated SN 2024abfl. Results of the observational campaign, published April 2 on the arXiv, preprint server, deliver essential information regarding the origin of this peculiar supernova.

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The Deep Space Network acquires Artemis II signal

The acquisition of the radio frequency signal from the Artemis II crewed mission to the moon by NASA’s Deep Space Network (DSN) is indicated by the peak in the data signal shown on the top computer screen.

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ESA’s Celeste broadcasts first navigation signal from low Earth orbit

The European Space Agency has achieved a European first with Celeste, successfully transmitting a navigation signal from low Earth orbit, following the launch of the mission’s first satellites on March 28.

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Artemis II: As humans return to the Moon, which of these 4 futures will we choose?

The four Artemis II astronauts who looped around the moon this week are expected to splash down soon. NASA’s grand mission spells a return to human deep-space travel, with renewed interest in building a long-term moon base.

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Artemis astronauts to shed light on space health risks

While the Artemis II astronauts have been protected from the icy vacuum of space on their journey, their bodies have nonetheless been left exposed to possibly high levels of radiation—a danger of space travel that NASA is anxiously waiting to study.

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After reaching speeds of 10,657 meters per second, Artemis II hurtles home for make-or-break splashdown

The Artemis II astronauts conducted a historic lunar flyby, gathered invaluable data and took in unprecedented moon views, but one of the most crucial moments of their 10-day mission is still to come: Friday’s splashdown.

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Medieval Japanese poetry and buried trees help elucidate volatile space weather

On Earth, extreme solar activity often appears as beautiful, benign auroras. But venturing beyond the safety of the Earth’s magnetic field, one faces the full brunt of a temperamental star that can suddenly erupt with flares and coronal mass ejections.

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How NASA’s Artemis II mission rediscovered the majesty and mystery of the moon

On April 10, Artemis II—humanity’s first mission to the moon in more than half a century—will draw to a close when the Orion capsule carrying four crew members detaches from its service module.

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Artemis II astronauts describe their lunar voyage as surreal and profound ahead of Earth return

Drawing ever closer to Earth, the Artemis II astronauts tidied up their lunar cruiser for its upcoming “fireball” return and reflected on their historic journey around the moon, describing it as surreal and profound.

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Could we actually terraform Mars? A new scientific roadmap lays out the blueprint—and the risks

Reading the “Mars Trilogy” by Kim Stanley Robinson brings the benefits and pitfalls of efforts to terraform the red planet into sharp relief. Since the 1970s, when Carl Sagan first suggested the possibility that we could make Mars more Earth-like, that process has been a staple of science fiction. But there’s always been a significant […]

A Mercury rover could explore the planet by sticking to the Terminator

The closest planet to our sun, Mercury, experiences extreme temperature variations. Since the planet has no atmosphere to speak of, it is in a constant cycle where one side is extremely hot and the other extremely cold. On the sun-facing side, temperatures reach a scorching 427°C (800°F), enough to melt tin and lead, and the […]