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A rare type of white dwarf pulsar has been found for only the second time in history in research led by the University of Warwick in the UK and independently by the Leibniz Institute for Astrophysics Potsdam (AIP) in Germany. To the great surprise of the scientific community, this odd pulsar phenomenon in a white dwarf was only observed for the first time in 2016. Only 773 light years away from Earth and spinning 300 times faster than our planet, the white dwarf pulsar has a size similar to the Earth, but a mass at least as large as the Sun. This means that a teaspoon of white dwarf material would weigh around 15 tons. A white dwarf pulsar consists of a rapidly spinning, burnt-out stellar remnant that lashes its neighbor – a red dwarf – with powerful beams of electrical particles and radiation, causing the entire system to brighten and fade dramatically over regular intervals. This is due to strong magnetic fields, but scientists are unsure what causes them.

Sally Kristen Ride was finishing her Ph.D. in physics at Stanford University in 1977 when she saw an article in the student newspaper saying that NASA was looking for astronaut candidates and that for the first time, women could apply. When she blasted off aboard the space shuttle Challenger 40 years ago on June 18, 1983, she became the first American woman—and, at 32, the youngest American—in space. Sally's historic flight made her a symbol of the ability of women to break barriers and a hero to generations of adventurous young girls. She flew on Challenger again in 1984 and later was the only person to serve on both panels investigating the nation's space shuttle disasters—the Challenger explosion in 1986 and the breakup of the shuttle Columbia on reentry in 2003. Sadly, Sally Ride died on July 23, 2012, after a 17-month battle with pancreatic cancer.

Valentina Tereshkova was born in Maslennikovo, near Yaroslavl, in Russia on March 6, 1937. Her father was a tractor driver and her mother worked in a textile factory. Interested in parachuting from a young age, Tereshkova began skydiving at a local flying club, making her first jump at the age of 22. At the time of her selection as a cosmonaut, she was working as a textile worker in a local factory. After the first human spaceflight by Yuri Gagarin, the selection of female cosmonaut trainees was authorized by the Soviet government, with the aim of ensuring the first woman in space was a Soviet citizen. On February 16, 1962, out of more than 400 applicants, five women were selected to join the cosmonaut corps. The group spent several months in training, which included weightless flights, isolation tests, centrifuge tests, 120 parachute jumps, and pilot training in jet aircraft. Sixty years ago today, on the morning of June 16, 1963, Vostok 6 lifted off without fault and Valentina Tereshkova at age 26, became the first woman in space.

Welcome to the night sky report for June 2023 -- Your guide to the constellations, deep sky objects, planets, and celestial events that are observable during the month. Though the nights are shorter in June, they are filled with fine sights. Throughout the month Mars and Venus draw nearer each evening in the western sky following sunset. The pair will appear a bit lower in the sky each night. Also, look for the Hercules constellation, which will lead you to a globular star cluster with hundreds of thousands of densely packed stars. Globular cluster M13 (the Hercules Cluster, NGC 6205) is best observed with a telescope, but binoculars will reveal it as a fuzzy spot. You can also spot Draco the dragon, which will point you to the Cat’s Eye Nebula (C6, NGC 6543). The night sky is truly a celestial showcase. Get outside and explore its wonders from your own backyard.

The International Space Station (ISS) has been in operation with research ongoing since November 2, 2000. But it was the first US space station – Skylab -- that helped pave the way for permanent operations in Low-Earth Orbit (LOE). The three man crew of Charles Conrad, Joseph Kerwin, and Paul Weitz launched aboard a Saturn IB rocket fifty years ago this week, on May 25, 1973. This followed the launch of the unmanned Skylab Space Station a week earlier by a Saturn V on May 14, 1973 – The last launch of the venerable Saturn V booster. Skylab orbited the Earth from 1973 to 1979. The 169,950-pound space station included a workshop, a solar observatory, a multiple docking adapter, and systems to allow three crews to spend up to 84 days in space. Altogether, there were three Skylab expeditions of 28, 59, and 84 days that produced a vast study of the Earth -- its crops, weather, changes in environment, as well as a revealing study of the Sun. Skylab moved the space program from the realm of the spectacular, into a new phase that could be characterized as almost businesslike and contributed to an orderly transition from the Apollo era to the Space Shuttle.

On May 16, 1963, NASA astronaut L. Gordon Cooper splashed down in the Pacific Ocean, completing the final mission of Project Mercury and the longest American spaceflight up to that time. His 22-orbit Mercury-Atlas 9 mission aboard the Faith 7 spacecraft lasted 34 hours and 20 minutes. He completed 11 experiments and overcame hardware anomalies to manually bring his spacecraft safely back to Earth. In his single mission, Cooper accumulated more spaceflight time than the other five Mercury flights combined, and gave NASA confidence to proceed to Project Gemini, during which astronauts demonstrated the techniques required to meet President John F. Kennedy’s goal to land a man on the Moon and return him safely to the Earth before the end of the decade.

A metallic object believed to be a meteorite struck the roof a residence in Hopewell Township, New Jersey. The home was occupied at the time but thankfully there were no injuries. The object is described as approximately 4 inches by 6 inches, is oblong in shape, and appears metallic. It penetrated the roof, the ceiling, and then impacted the hardwood floor before coming to rest. The Hopewell Township Police Department has contacted several agencies for assistance in positively identifying the object, which is believed to be associated with the Eta Aquarids meteor shower. Like most meteor showers, the annual Eta Aquarids are caused by the debris of a comet that once crossed Earth's path. In this case, it's the famous Halley's Comet. This comet visits the inner Solar System every 75 or 76 years, but the associated meteor shower is an annual event. The last time it passed close to Earth was 1986. It will be back again in 2061. If this object can be positively identified as an Eta Aquarids meteorite, then we’ll be able to touch and examine an actual piece of Halley’s Comet.

Welcome to the night sky report for May 2023 -- Your guide to the constellations, deep sky objects, planets, and celestial events that are observable during the month. In May, we are looking away from the crowded, dusty plane of our own galaxy toward a region where the sky is brimming with distant galaxies. Locate Virgo to find a concentration of roughly 2000 galaxies and search for Coma Berenices to identify many more. Coma Berenices is a great target for binoculars. Look for galaxies like M104 (Sombrero Galaxy), M87 (Virgo A Galaxy), and M64 (Black Eye Galaxy). The night sky is truly a celestial showcase. Get outside and explore its wonders from your own backyard.

Since prehistoric times, cultures and civilizations all around the world have given their own unique names to the brightest and most prominent stars in the night sky. Certain names have remained little changed as they passed through Greek, Latin, and Arabic cultures, and many names are still in use today. As astronomy developed and advanced over the centuries, a need arose for a universal cataloging system whereby the brightest stars were known by the same labels, regardless of the country or culture from which the astronomers came. In May 2016, a specialized working group was established by the International Astronomical Union (IAU) to formalize star names, many of which had been used colloquially for centuries. The IAU now has a catalogue of stars that includes 449 approved names.

Nearly 70 years ago, astronomer Paul Merrill was watching the sky through a telescope at Mount Wilson Observatory in Pasadena, California. As he observed the light coming from a distant star, he saw signatures of the element technetium. This was completely unexpected since Technetium has no stable forms – it’s what physicists call an “artificial” or “synthetic” element that does not occur naturally on Earth. It has only been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb. Any technetium present when the star formed should have transformed itself into a different element, such as ruthenium or molybdenum, long ago. As an artificial element, how was technetium created in this star? On May 2, 1952, Merrill reported his discovery -- Stars can create heavy elements. Not only had Merrill explained a puzzling observation, he had also opened the door to understanding our cosmic origins. Not many discoveries in science completely change our view of the world – but this one did. The newly revealed picture of the universe was simply mind-blowing, and the repercussions of this discovery are still driving nuclear science research today.

NASA’s James Webb Space Telescope has taken a stunning image of one the Solar System’s ice giants, the planet Uranus. The other ice giant, Neptune, was imaged by JWST last year. The new image features dramatic rings as well as bright features in the planet’s atmosphere. The Webb data demonstrates the observatory’s unprecedented sensitivity for the faintest dusty rings, which have only ever been imaged by two other facilities: the Voyager 2 spacecraft as it flew past the planet in 1986, and the Keck Observatory with advanced adaptive optics. Uranus has 13 known rings. Some of these rings are so bright that they appear to merge into a larger ring. Webb also captured many of the 27 known moons of Uranus.

Welcome to the night sky report for April 2023 -- Your guide to the constellations, deep sky objects, planets, and celestial events that are observable during the month. During April, near the Big Dipper, you will find several interesting binary stars. You can also spot galaxies like the Pinwheel Galaxy (NGC 5457, M101), the Cigar Galaxy (NGC 3034, M82), and M96 (NGC 3368) -- the last of which is an asymmetric galaxy that may have been gravitationally disrupted by encounters with its neighbors. Also, during the month, the planet Mercury – smallest and fastest moving of the planets in our Solar System – will reach its highest and most visible place in the evening sky for the year. The night sky is truly a celestial showcase. Get outside and explore its wonders from your own backyard.

Radio telescopes are facing a problem. All satellites -- whatever their function -- use radio waves to transmit information to the surface of the Earth. Just as light pollution can hide a starry night sky, radio transmissions can swamp out the radio waves astronomers use to learn about black holes, newly forming stars, and the evolution of galaxies. With tens of thousands of satellites expected to go into orbit in the coming years and increasing use on the ground, the radio spectrum is getting crowded. Radio quiet zones – regions, usually located in remote areas, where ground-based radio transmissions are limited or prohibited – have protected radio astronomy in the past. As the problem of radio pollution continues to grow, scientists, engineers and policymakers will need to figure out how everyone can effectively share the limited range of radio frequencies.

The rare sight of a Wolf-Rayet star – among the most luminous, most massive, and most briefly detectable stars known – was one of the first observations made by NASA’s James Webb Space Telescope in June 2022. Webb showed the star, WR 124, in unprecedented detail with its powerful infrared instruments. The star is 15,000 light-years away in the constellation Sagitta. As massive stars progress through their lifecycles, only some of them pass through a brief Wolf-Rayet phase before going supernova. This makes Webb’s detailed observations of this rare phase valuable to astronomers. Stars like WR 124 help astronomers understand a crucial period in the early history of the Universe because similar dying stars first seeded the young Universe with heavy elements forged in their cores – elements that are now common in the current era, including on Earth.