Tag: Solar System

Before and after satellite images show lakes appearing across Sahara after deluge of rain soaks desert

NeRD

Lakes have appeared in the Sahara after a cyclone brought a deluge of rain to northern Africa that drenched swathes of the largest hot desert on Earth, satellite images show. An extratropical cyclone hit parts of Morocco, Algeria, Tunisia and Libya on Sept. 7 and 8, dropping around 8 inches (20 centimeters) on the affected areas — equivalent to an entire year’s worth of rainfall in just a few days, according to NASA’s Earth Observatory. The deluge and runoff filled multiple ephemeral lakes in the Sahara, including the Sebkha el…

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See Comet Tsuchinshan-ATLAS eject a tail of gas and dust as it flies past the sun (photos)

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A dazzling comet left behind a dramatic dust tail as it swept around the sun, new photos reveal. C/2023 A3 (Tsuchinshan-ATLAS) was visible to the naked eye earlier in October as the comet, which is sort of an icy space snowball, flew past the sun and Earth. Fresh telescope footage from the U.S. Naval Research Laboratory reveals that the comet’s dust tail was visible near the sun “for several days”, long after the little world left the neighborhood, lab officials stated. Related: See the ‘comet of the century’ light up…

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Watch sun erupt in 1st images from NOAA’s groundbreaking new satellite (photos)

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The first images from a new space-based telescope launched into Earth’s orbit to monitor the sun captured a striking solar storm outburst.  The National Oceanic and Atmospheric Administration (NOAA) shared the first images taken by its Compact Coronagraph (CCOR-1), the world’s first operational space-based coronagraph. CCOR-1 is mounted on NOAA’s newest geostationary satellite, GOES-19, which launched into orbit above Earth on June 25.  CCOR-1 began its mission to observe the sun’s corona — the faint outermost layer of the solar atmosphere — on Sept. 19. The powerful solar telescope uses…

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Headless ‘Halloween comet’ could already be doomed

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The latest update concerning “the other comet” of October 2024 — Comet C/2024 S1 (ATLAS) — is that it continues on target to completely disintegrate before it sweeps around the sun early next Monday.  Back on Oct. 10, Space.com published an article indicating that this comet — which belongs to the Kreutz family of sungrazing comets — was in the process of disintegration and would likely not develop into an eye-catching object like its early October predecessor, Comet Tsuchinshan-ATLAS.  However, an online story published this past Monday evening (Oct. 21)…

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Most of Earth’s meteorites may have come from the same 3 spots

NeRD

Earth is constantly getting pummeled by meteorites. We are unaware of most of them, as they burn up in our atmosphere before they hit the ground. Every now and again, though, something larger gets drawn into Earth’s gravitational field —  and when this happens, it usually spells bad news for any life living on our planet’s surface.  Scientists know that the vast majority of meteorites that come crashing down to Earth originate from the solar system‘s main asteroid belt: a region between Mars and Jupiter where irregularly shaped rocks left…

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Comet Tsuchinshan-ATLAS is still visible in the night sky, but not for long

NeRD

Have you seen comet Tsuchinshan-ATLAS yet? If you’ve not been able to glimpse the bright, icy space rock that’s traveled from the edge of the solar system, it’s not too late. But you need to see it soon.  The coma and long tail of comet Tsuchinshan-ATLAS, also called C/2023 A3 (Tsuchinshan–ATLAS), is currently shining at magnitude +0.5. That’s well within the grasp of the human eye. It’s likely now past its best, but only just, and will likely remain a naked-eye object after sunset in the west until, and possibly…

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Europe launches ambitious ‘Moonlight’ program to support lunar exploration

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MILAN — The European Space Agency (ESA) is building infrastructure to support lunar exploration. ESA officially launched the Moonlight Lunar Communications and Navigation Services (LCNS) program here at the International Astronautical Congress on Tuesday (Oct. 15), with the aim of providing services for the more than 400 moon missions planned by space agencies and private companies over the next two decades. Moonlight will be a constellation of five lunar satellites, which together will enable precise, autonomous landings and surface mobility, according to ESA, while facilitating high-speed communication and data transfer…

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US and China will need to discuss moon mission plans, NASA chief predicts

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MILAN — NASA and China will need to discuss exchanges of data and mission plans as the two sides move to build sustainable presences on the moon, according to the NASA administrator.  NASA chief Bill Nelson met with the press at the 75th International Astronautical Congress (IAC) here on Tuesday (Oct. 15), addressing questions related to the agency’s Artemis program. Both NASA, with Artemis, and China, with its International Lunar Research Station (ILRS), are working to get astronauts to the moon and to build lunar infrastructure to support repeated and…

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Solar Cycle 25 is still in max phase, so more aurora-boosting sun storms could be coming

NeRD

You could get more opportunities to see supercharged auroras over the next few months, thanks to our very active sun. Solar activity waxes and wanes on an 11-year cycle. The current cycle, known as Solar Cycle 25, began in December 2019 and is still in its maximum phase, experts say. “Currently, we’re about two years into the maximum period, so we’re anticipating another year or so of maximum phase before we really enter the declining phase, which will lead us back to solar minimum,” Lisa Upton, co-chair of the Solar…

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Estonia joins Artemis Accords as moon-exploration coalition agrees to continue outreach efforts

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MILAN — The nations signed up to the Artemis Accords are looking to spread the word on common principles and best practices on exploring outer space.  Estonia became the 45th country to sign up to the Accords just ahead of the International Astronautical Congress (IAC) here, which opened on Monday (Oct. 14). But engagement and enlargement efforts won’t stop there. The Artemis Accords — a set of statements that set out common principles, guidelines and best practices for exploration of the moon and beyond — had its third heads-of-agencies meeting…

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