Saturday, May 3

NASA

Starlink satellites lost on Falcon 9 upper stage failure
NASA

Starlink satellites lost on Falcon 9 upper stage failure

TOKYO — SpaceX says it will not be able to recover the 20 Starlink satellites left in a very low orbit after a malfunction of a Falcon 9 upper stage on a July 11 launch. In a statement July 12, the company said that the 20 satellites on the Group 9-3 launch have been unable to raise the orbit because the electric propulsion systems on the spacecraft cannot counteract the high atmospheric drag the satellites encounter in their very low orbits. The rocket’s upper stage engine “experienced an anomaly and was unable to complete its second burn,” the company stated, which would have circularized the orbit of the stage before satellite deployment. While the stage was able to deploy the satellites, they were left in an orbit with a perigee, or low point, of just 135 kilometers. ...
Fireball lights up the sky over Salt Lake City – NASA Blogs
NASA

Fireball lights up the sky over Salt Lake City – NASA Blogs

A bright meteor flew through the skies over northern Utah on Saturday morning, later raining down meteorites over the Great Salt Lake. Residents of the Salt Lake City area were startled by loud booms at 8:30 a.m. MDT on Saturday, Aug. 13, 2022. Eyewitnesses saw a fireball in the sky, 16 times brighter than the full Moon. GOES 17 Geostationary Lightning Mapper detection of the Aug. 13, 2022, fireball over northern Utah. Credits: NOAA Approximately 22,000 miles out in space, NOAA’s Geostationary Lightning Mappers (GLM) onboard the Geostationary Operational Environmental Satellites (GOES) 17 and 18 detected the meteor, which was first seen 50 miles over West Valley City. However, it is difficult to pinpoint its exact trajectory. “Daytime fireballs are very tough to analyze,” said Bill Cook...
NASA — Follow, follow the Sun / And which way the wind…
NASA

NASA — Follow, follow the Sun / And which way the wind…

On June 10, people in parts of the northern hemisphere will have the chance to witness a solar eclipse.Watch the full visualization of the eclipse.The June 10 eclipse is an annular solar eclipse, meaning that the Sun will never be completely covered by the Moon. The Moon’s orbit around the Earth is not a perfect circle, so throughout each month, the Moon’s distance from Earth varies. During an annular eclipse, the Moon is far enough away from Earth that the Moon appears smaller than the Sun in the sky. Since the Moon does not block the entire view of the Sun, it will look like a dark disk on top of a larger, bright disk. This creates what looks like a ring of fire around the Moon.People in the narrow path of annularity — which, for this eclipse, cuts through Canada, Greenland, and northern...
Firefly Aerospace launches NASA-sponsored cubesats
NASA

Firefly Aerospace launches NASA-sponsored cubesats

Updated 8:25 p.m. Eastern with post-launch statement. TOKYO — Firefly Aerospace placed eight cubesats into orbit on a mission funded by NASA on the first flight of the company’s Alpha rocket since an upper stage malfunction more than half a year ago. The Alpha rocket lifted off from a foggy Vandenberg Space Force Base in California at 12:04 a.m. Eastern July 4. A launch attempt July 2 was scrubbed after a ground equipment issue halted the countdown just before ignition of the rocket’s first stage engines. The rocket started deploying its payload of eight cubesats about 35 minutes after the upper stage shut down, a process expected to last about 11 minutes according to a timeline provided by Firefly. The orbit was a low Earth orbit, but Firefly did not disclose the sp...
NASA

Mars-Saturn, Jupiter-Venus Conjunctions Happening This Month! – NASA Blogs

Skywatchers, you have the opportunity to see not just one, but two planetary conjunctions during the month of April 2022! A conjunction is a celestial event in which two planets, a planet and the Moon, or a planet and a star appear close together in Earth’s night sky. Conjunctions have no profound astronomical significance, but they are nice to view. In our Solar System, conjunctions occur frequently between planets because the planets orbit around the Sun in approximately the same plane –  the ecliptic plane – and thus trace similar paths across our sky. The first planetary meet up occurs on the mornings of April 4 and 5 before sunrise and includes Mars and Saturn, with Saturn being the brightest. These two planets will come together, appearing as almost a single point of light. Howeve...