Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo and appears as only a faint, extended object in small telescopes. We see the... Continue Reading →
Is this one galaxy or two? This question came to light in 1950 when astronomer Arthur Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ball of much redder... Continue Reading →
Located about 5.8 billion light years from Earth in the Phoenix Constellation, astronomers have confirmed the first example of a galaxy cluster where large numbers of stars are being born at its core. Galaxy clusters are the largest structures in... Continue Reading →
Is this image art? 50 years ago, Apollo 12 astronaut-photographer Charles "Pete" Conrad recorded this masterpiece while documenting colleague Alan Bean's lunar soil collection activities on Oceanus Procellarum. The featured image is dramatic and stark. The harsh environment of the Moon's Ocean of Storms is echoed in Bean's helmet, a... Continue Reading →
Station Commander Luca Parmitano of the European Space Agency conducts repairs while attached to the space station’s robotic arm during the first spacewalk to repair the Alpha Magnetic Spectrometer on Nov. 15, 2019. He and NASA astronaut Andrew Morgan (out of frame) worked for more than six... Continue Reading →
Voyager 1 has a companion in the realm of the stars. Researchers at the University of Iowa report that the spacecraft Voyager 2 has entered the interstellar medium (ISM), the region of space outside the bubble-shaped boundary produced by wind... Continue Reading →
This view from NASA's Juno spacecraft captures colorful, intricate patterns in a jet stream region of Jupiter's northern hemisphere known as "Jet N3." Jupiter's cloud tops do not form a simple, flat surface. Data from Juno helped scientists discover that the swirling... Continue Reading →
Typically, the International Space Station is visible only at night. Slowly drifting across the night sky as it orbits the Earth, the International Space Station (ISS) can be seen as a bright spot about once a month from many locations. The ISS is then visible only... Continue Reading →
The failed unit was beyond the reach of the robotic Canadarm2. Therefore, this repair of the International Space Station would require humans. The humans on duty were NASA's Jessica Meir and Christina Koch. This was the fourth spacewalk for Meir, the first for Koch, and the first... Continue Reading →
