ZCZC AS04 QST de W1AW Space Bulletin 004 ARLS004 From ARRL Headquarters Newington, CT June 27, 2019 To all radio amateurs
SB SPACE ARL ARLS004 ARLS004 LightSail 2 Launches, Will Transmit CW Beacon
The Planetary Society’s LightSail 2 CubeSat, launched on June 25, will transmit Morse code from space. LightSail is a citizen-funded project to send a small spacecraft, propelled solely by sunlight, into Earth’s orbit. The innovative satellite is due to be deployed on July 2 from Prox-1, a Georgia Tech student-built spacecraft the size of a small washing machine. Once deployed, LightSail 2 will automatically transmit a beacon packet every few seconds, which can be decoded into 238 lines of text telemetry describing the spacecraft’s health and status, including everything from battery status to solar sail deployment motor state. Every 45 seconds, the spacecraft will transmit “LS2” on the spacecraft’s frequency of 437.025 MHz, within the Amateur Radio 70-centimeter band.
Former astronaut and long-duration spaceflight pioneer Owen Garriott, 88, died today, April 15, at his home in Huntsville, Alabama. Garriott flew aboard the Skylab space station during the Skylab 3 mission and on the Space Shuttle Columbia for the STS-9/Spacelab-1 mission. He spent a total of 70 days in space.
“The astronauts, scientists and engineers at Johnson Space Center are saddened by the loss of Owen Garriott,” said Chief Astronaut Pat Forrester. “We remember the history he made during the Skylab and space shuttle programs that helped shape the space program we have today. Not only was he a bright scientist and astronaut, he and his crewmates set the stage for international cooperation in human spaceflight. He also was the first to participate in amateur radio from space, a hobby many of our astronauts still enjoy today.”
Two tiny satellites that just launched on a historic mission to Mars have phoned home for the first time.
The Mars Cube One duo, officially known as MarCO-A and MarCO-B, lifted off early Saturday morning (May 5), rising into skies above California’s Vandenberg Air Force Base along with NASA’s InSight Mars lander. They are the first cubesats ever launched to another planet.
“Both MarCO-A and B say ‘Polo!'” MarCO mission chief engineer Andy Klesh, of NASA’s Jet Propulsion Laboratory in Pasadena, California, said in a statement. “It’s a sign that the little sats are alive and well.”
If all goes according to plan, MarCO-A and MarCO-B will fly by Mars on Nov. 26, the same day that InSight is scheduled to land. In fact, the cubesats will attempt to beam data to Earth from InSight during the lander’s harrowing “7 minutes of terror” entry, descent and landing sequence. (The duo’s contribution here isn’t crucial; NASA’s Mars Reconnaissance Orbiter will also perform this communications-relay work.)
But the main purpose of the $18.5 million MarCO mission is to show that cubesats, which to date have been restricted to Earth orbit, can explore interplanetary space. MarCO-A and MarCO-B are demonstrating a number of cubesat technologies during their nearly 7-month cruise to Mars, including a folding high-gain antenna and a cold-gas propulsion system.
This gas is compressed R236FA, which is commonly found in fire extinguishers. For this reason, the mission team have dubbed the cubesats Wall-E and Eva, two robots from the 2008 Pixar film “Wall-E.” In the movie, the trash-compacting robot Wall-E flies around space using a fire extinguisher for propulsion.
“We’re nervous but excited,” MarCO project manager Joel Krajewski, also of JPL, said in the same statement. “A lot of work went into designing and testing these components so that they could survive the trip to Mars and relay data during InSight’s landing. But our broader goal is to learn more about how to adapt cubesat technologies for future deep-space missions.”
The MarCO mission will come to an end shortly after the cubesats’ planned Mars flyby, mission scientists have said.
The main purpose of Saturday’s launch, which involved a United Launch Alliance Atlas V rocket, was to get InSight on its way to Mars. The lander will probe the interior structure and dynamics of Mars, using a supersensitive seismometer and a heat probe, which will hammer itself up to 16 feet (4.9 meters) beneath the planet’s surface.
Mission scientists will also note tiny wobbles in Mars’ axis of rotation by tracking InSight’s location precisely. This information will reveal insights about the planet’s core, NASA officials have said.
JPL built the MarCO spacecraft. InSight — which is short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport — was built by aerospace company Lockheed Martin.
ARISS Russia is planning a special Slow Scan Television (SSTV) event from the International Space Station in celebration of Cosmonautics Day.
The transmissions began on April 11 at 11:30 UTC and run through April 14 ending at 18:20 UTC.
The ISS is transmitting on 145.800 MHz FM. The SSTV signal is using PD120. I recommend you record the passes for decoding in case a live capture has issues decoding. (You may capture two image transmissions during one pass as each one takes 120 seconds.)
When the ISS is nearly overhead, an HT should pickup the transmission. Just angle the radio a bit.
Visit the N2YO.com website to review 10 day predictions (A blue button on the right side). Please note that you will want to choose “all passes” as they initially list only visible ones.
Out of billions of stars in the Milky Way galaxy, there’s one in particular, orbiting 25,000 light-years from the galactic core, that affects Earth day by day, moment by moment. That star, of course, is the sun.While the sun’s activity cycle has been tracked for about two and a half centuries, the use of space-based telescopes offers a new and unique perspective of our nearest star.
China’s Tiangong-1 space station is set to make an uncontrolled reentry into the Earth’s atmosphere on or around April 1. The update from the Aerospace Corporation, which is tracking the abandoned orbital laboratory, predicts that it will make its final plunge at 00:00 GMT on April 1 with a margin of error of ±36 hours, when it will burn up somewhere between 43° North and 43° South latitudes.
A huge solar storm is heading for Earth, and it’s likely to hit tomorrow.
The storm could knockout satellites, disrupt power supplies and spark stunning displays of the Northern Lights.
It was created last week by an enormous explosion in the sun’s atmosphere known as a solar flare, and charged particles from that flare are now on their way to our planet.
The arrival of the solar storm coincides with the formation of ‘equinox cracks’ in Earth’s magnetic field, which some scientists believe form around the equinoxes on March 20 and September 23 each year.
These cracks weaken our planet’s natural protection against charged particles and could leave commercial flights and GPS systems exposed to the incoming storm.
The cracks also mean stargazers are more likely to catch glimpses of the Northern lights this week.
The Aurora Australis on June 25, 2017, as seen from the International Space Station.NASA
First, the bad news for stargazers: Auroras are going dark in many parts of the world.
The number of these atmospheric light shows won’t bottom out for several years, which means locations far from Earth’s poles — such as the UK and northern continental US — may rarely if ever see the Northern Lights during that time. A study published earlier this year hints this dearth of auroras may last for decades.