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Explanation: Graceful star trail arcs reflect planet Earth's daily rotation in this colorful night skyscape. To create the timelapse composite, on May 12 consecutive exposures were recorded with a camera fixed to a tripod on the shores of the Ashokan Reservoir, in the Catskills region of New York, USA. North star Polaris is near the center of the star trail arcs. The broad trail of a waxing crescent Moon is on the left, casting a strong reflection across the reservoir waters. With intense solar activity driving recent geomagnetic storms, the colorful aurora borealis or northern lights, rare to the region,...

Explanation: This well-composed composite panoramic view looks due south from Banks Peninsula near Christchurch on New Zealand's South Island. The base of a tower-like rocky sea stack is awash in the foreground, with stars of the Southern Cross at the top of the frame and planet Earth's south celestial pole near center. Still, captured on May 11, vibrant aurora australis dominate the starry southern sea and skyscape. The shimmering southern lights were part of extensive auroral displays that entertained skywatchers in northern and southern hemispheres around planet Earth, caused by intense geomagnetic storms. The extreme spaceweather was triggered by the...

Explanation: A familiar sight from Georgia, USA, the Moon sets near the western horizon in this rural night skyscape. Captured on May 10 before local midnight, the image overexposes the Moon's bright waxing crescent at left in the frame. A long irrigation rig stretches across farmland about 15 miles north of the city of Bainbridge. Shimmering curtains of aurora shine across the starry sky, definitely an unfamiliar sight for southern Georgia nights. Last weekend, extreme geomagnetic storms triggered by the recent intense activity from solar active region AR 3664 brought epic displays of aurora, usually seen closer to the poles,...

Boeing's Starliner flight to the International Space Station was delayed again due to a helium leak. NASA, Boeing and the United Launch Alliance said in a statemen Tuesday that the launch date will now come no earlier than Tuesday at 4:43 p.m. EDT. "Starliner teams are working to resolve a small helium leak detected in the spacecraft's service module traced to a flange on a single reaction control system thruster. Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic," they said. Boeing's statement said that it is working with NASA...

Explanation: What did the monster active region that created the recent auroras look like when at the Sun's edge? There, AR 3664 better showed its 3D structure. Pictured, a large multi-pronged solar prominence was captured extending from chaotic sunspot region AR 3664 out into space, just one example of the particle clouds ejected from this violent solar region. The Earth could easily fit under this long-extended prominence. The featured image was captured two days ago from this constantly changing region. Yesterday, the strongest solar flare in years was expelled (not shown), a blast classified in the upper X-class. Ultraviolet light...

Explanation: For the mostly harmless denizens of planet Earth, the brighter stars of open cluster NGC 2169 seem to form a cosmic 37. Did you expect 42? From our perspective, the improbable numerical asterism appears solely by chance. It lies at an estimated distance of 3,300 light-years toward the constellation Orion. As far as galactic or open star clusters go, NGC 2169 is a small one, spanning about 7 light-years. Formed at the same time from the same cloud of dust and gas, the stars of NGC 2169 are only about 11 million years old. Such clusters are expected to...

Explanation: Northern lights don't usually reach this far south. Magnetic chaos in the Sun's huge Active Region 3664, however, produced a surface explosion that sent a burst of electrons, protons, and more massive, charged nuclei into the Solar System. A few days later, that coronal mass ejection (CME) impacted the Earth and triggered auroras that are being reported unusually far from our planet's north and south poles. The free sky show might not be over -- the sunspot rich AR3664 has ejected even more CMEs that might also impact the Earth tonight or tomorrow. That active region is now near...

Explanation: Right now, one of the largest sunspot groups in recent history is crossing the Sun. Active Region 3664 is not only big -- it's violent, throwing off clouds of particles into the Solar System. Some of these CMEs are already impacting the Earth, and others might follow. At the extreme, these solar storms could cause some Earth-orbiting satellites to malfunction, the Earth's atmosphere to slightly distort, and electrical power grids to surge. When impacting Earth's upper atmosphere, these particles can produce beautiful auroras, with some auroras already being reported unusually far south. Pictured here, AR3664 and its dark sunspots...

Explanation: Relax and watch two black holes merge. Inspired by the first direct detection of gravitational waves in 2015, this simulation plays in slow motion but would take about one third of a second if run in real time. Set on a cosmic stage, the black holes are posed in front of stars, gas, and dust. Their extreme gravity lenses the light from behind them into Einstein rings as they spiral closer and finally merge into one. The otherwise invisible gravitational waves generated as the massive objects rapidly coalesce cause the visible image to ripple and slosh both inside and...

Explanation: Bright elliptical galaxy Messier 87 (M87) is home to the supermassive black hole captured in 2017 by planet Earth's Event Horizon Telescope in the first ever image of a black hole. Giant of the Virgo galaxy cluster about 55 million light-years away, M87 is rendered in blue hues in this infrared image from the Spitzer Space telescope. Though M87 appears mostly featureless and cloud-like, the Spitzer image does record details of relativistic jets blasting from the galaxy's central region. Shown in the inset at top right, the jets themselves span thousands of light-years. The brighter jet seen on the...

Explanation: What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to make it look very unusual. The featured animated video gives a visualization. The video starts with you, the observer, looking toward the black hole from just above the plane of the accretion disk. Surrounding the central black hole is a thin circular image of the orbiting disk that marks the position of the photon sphere -- inside of...

Explanation: What happens when a black hole devours a star? Many details remain unknown, but observations are providing new clues. In 2014, a powerful explosion was recorded by the ground-based robotic telescopes of the All Sky Automated Survey for SuperNovae (Project ASAS-SN), with followed-up observations by instruments including NASA's Earth-orbiting Swift satellite. Computer modeling of these emissions fit a star being ripped apart by a distant supermassive black hole. The results of such a collision are portrayed in the featured artistic illustration. The black hole itself is a depicted as a tiny black dot in the center. As matter falls...

A former Naval Academy soccer star who led her squad to an undefeated league season has been named to another team that goes above and beyond. NASA announced Friday that it had assigned Marine Corps Lt. Col. Nicole Mann to a new crew of astronauts who will fly a privately developed spaceship, marking a return of U.S.-manned space flight after the shuttle program ended in 2011. Since then, Americans have relied on Russian spacecraft for space travel. Mann will be a part of a three-person crew to fly Boeing’s Starliner spacecraft on a mid-2019 mission, the spacecraft’s first manned flight....

One of the key differences between the two is that SpaceX was awarded $2.6 billion, while Boeing receiving $4.2 billion. SpaceX completed a pad abort test in 2015, while Boeing hopes to be able to achieve this milestone possibly this year. Boeing's abort test had been scheduled for this summer, but it was delayed due to a leak of highly-toxic hydrazine from one of the abort engines. The leak occurred after the command was issued to shut down the engines. Several of the abort engine valves failed to fully close. As early as July 11, 2018, NASA internally believed (as...

Liftoff is at 1:35 p.m. EDT (1735 GMT) Designated Space Based Infrared System Geosynchronous Earth Orbit Flight 5 (SBIRS Geo-5), the mission marks ULA's first launch so far this year. However, the company has a busy summer planned, including the launch of Boeing's Starliner crew capsule to the International Space Station. That mission, called OFT-2, will be the spacecraft's second uncrewed orbital flight test. The first, which occurred in Dec. 2019, failed to reach the space station due to a software issue. Following a successful second flight test, Boeing will launch its first crew of astronauts later this year. Weather...

Boeing's Starliner spacecraft took a road trip Tuesday before its May 6 liftoff, moving from the Kennedy Space Center to the Cape Canaveral Space Force Station. Starliner boarded a transporter at the Commercial Crew and Cargo Processing Facility at Kennedy Space Center on Monday. Final checks were completed Tuesday for the short trip to the United Launch Alliance's Vertical Integration Facility at the Space Force station. "The Atlas V will receive its precious cargo today as the Boeing Space Starliner spacecraft is transported to ULA's Vertical Integration Facility and lifted onto the rocket," ULA said on X. Astronauts Butch Wilmore...

The spacecraft made its first connection with the International Space Station's (ISS) Harmony module at 8:28 p.m. EDT. Boeing said that – in addition to ground controllers in Houston – astronauts on the space station monitored Starliner throughout the flight and sometimes commanded the spacecraft to verify control capabilities. The Starliner launched on a United Launch Alliance Atlas V rocket from Florida's Cape Canaveral Space Force Station at 6:54 p.m. ET on Thursday. While docked, the crew of the station will float inside the Starliner, conduct an initial cabin tour and periodically perform system checkouts while ground controllers evaluate data...

In preparation for this second attempt at OFT-2, the Starliner capsule is currently sitting atop a United Launch Alliance Atlas V rocket, which is scheduled to launch from Space Launch Complex-41 at Cape Canaveral Space Force Station at 6:54 p.m. EDT on Thursday, May 19. Should all go as planned, the uncrewed CST-100 will dock at the International Space Station on Friday, May 20 at 7:10 p.m. EDT. Starliner OFT-2 is packed with around 500 pounds of cargo (mostly food), and the plan is to return 600 pounds of cargo back to Earth. Recent precedent being what it is, this...

Over the weekend, engineers were able to open seven of those valves and restore them to working order, the company said, and it is still hopeful that it could launch the test flight by the end of the month. But Boeing still does not know what caused the problem, which forced yet another delay in a program that has been plagued by serious issues for years. Boeing is developing Starliner under a contract with NASA to fly the space agency’s astronauts to and from the International Space Station. Elon Musk’s SpaceX, the other company that holds the “commercial crew” contract,...

The Boeing Starliner didn't see any testing shortcuts before its flawed flight test, officials said Friday, but the company vowed to expand tests in the future. Boeing (BA) stock fell. In December, the Boeing Starliner set off on an uncrewed test, but it failed to reach the International Space Station as planned because a software error prevented it from getting into the proper orbit. It was later revealed that an internal timer on the capsule was off by 11 hours, causing the Boeing Starliner to believe that it was further into the mission. Another software issue was found with the...