Skynet 7-10-21 “Gravitational Waves (Part 3): What is LIGO?” & Constellation “Scorpius the Scorpion” 9PM CT

Saturday’s Topic: ““Gravitational Waves: What is LIGO? (Part 3). ” & “Scorpius, the Scorpion” 

Net Control: Tom KE5ICX

Afterglow Movie 10:30PM: “Beyond the Stars” (1989)

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Saturday’s DARC SkyNet is at 9PM CT.

Discussion Topic of the Evening.

“Gravitational Waves: What is LIGO? (Part 3). 

Gravitational Wave Sources

Today we’ll talk about how we detect them using the Laser Interferometer Gravitational-Wave Observatory (LIGO) 

See let’s start with what an Interferometer is…

LIGO Interferometer

Interferometer Schematic

Movie (with sound)

LIGO Livingston

LIGO Palomar


Livingston Exposed Vacuum Beam Tube

Hanford’s LIGO

Waz Up
Space Exploration and Space History 

Space Exploration News

NASA’s James Webb Space Telescope passes key review ahead of fall launch

Lunar Gateway×485.jpg

New Atomic Clock

Space-Related Birthdays

Jessica Meir Jul 15, 1977 Soyuz MS-15

Rick Husband Jul 12, 1957 STS-96, STS-107, where he died when the shuttle Columbia disintegrated

Robert F. Overmyer Jul 14, 1936 STS-5, STS-51B

George Nelson Jul 13, 1950 STS-41-C, STS-61-C, STS-26

Janet L. Kavandi Jul 17, 1959 STS-91, STS-99, STS-104

Lawrence J. DeLucas Jul 11, 1950 STS-50

This Week in Space History

July 8, 2011 10 Years Ago: STS-135, the Space Shuttle’s Grand Finale

July 10, 1962 Telstar launches

Miss Carolyn’s Constellation of the Week

Miss Carolyn’s Constellation of the Week– July 010, 2021 

Scorpius, the Scorpion.

Space Launches For This Week

Space Coast Launches

Space Flight Now Launch Schedule


Proton • Nauka

Launch time: TBD

Launch site: Baikonur Cosmodrome, Kazakhstan

A Russian government Proton rocket will launch the Nauka laboratory module to the International Space Station. The Nauka module, or the Multipurpose Laboratory Module, will also carry the European Robotic Arm to the space station. Delayed from July 15. [July 5]

JulyFalcon 9 • Starlink

Launch time: TBD

Launch site: SLC-4E, Vandenberg Space Force Base, California

A SpaceX Falcon 9 rocket will launch on the first dedicated mission with Starlink internet satellites from Vandenberg Space Force Base. This mission will deploy an unspecified number of Starlink satellites into a high-inclination orbit. [June 7]

July 27

Ariane 5 • Star One D2 & Eutelsat Quantum

Launch window: TBD

Launch site: ELA-3, Kourou, French Guiana

Arianespace will use an Ariane 5 ECA rocket, designated VA254, to launch the Star One D2 and Eutelsat Quantum communications satellites. Owned by the Brazilian operator Embratel Star One, the Star One D2 was built by Maxar and will deliver telecommunications, direct-to-home television services, and fast broadband to customers in South America, Mexico, Central America, and parts of the Atlantic Ocean. The Eutelsat Quantum satellite was built by SSTL and Airbus Defense and Space under the auspices of a public-private research and development project between the European Space Agency, Eutelsat and Airbus. Designed for coverage over the Middle East and North Africa, the software-defined satellite can be reprogrammed for new communications missions in orbit. Delayed from January, February, March 4, and May. [June 7]

July 30

Atlas 5 • CST-100 Starliner Orbital Flight Test 2

Launch time: 1853 GMT (2:53 p.m. EDT)

Launch site: SLC-41, Cape Canaveral Air Force Station, Florida

A United Launch Alliance Atlas 5 rocket, designated AV-082, will launch Boeing’s CST-100 Starliner spacecraft on second unpiloted test flight to the International Space Station. This mission was added after Boeing’s decision to refly the Starliner’s Orbital Flight Test before proceeding with the Crew Flight Test. The rocket will fly in a vehicle configuration with two solid rocket boosters and a dual-engine Centaur upper stage. Delayed from 3rd Quarter. Delayed from Jan. 4. Moved forward from March 29, April 2 and May. [May 13]

Aug. 1

Antares • NG-16

Launch time: TBD

Launch site: Pad 0A, Wallops Island, Virginia

A Northrop Grumman Antares rocket will launch the 17th Cygnus cargo freighter on the 16th operational cargo delivery flight to the International Space Station. The mission is known as NG-16. The rocket will fly in the Antares 230+ configuration, with two RD-181 first stage engines and a Castor 30XL second stage. Delayed from July. [March 31]

Aug. 2

Soyuz • OneWeb 9

Launch time: TBD

Launch site: Baikonur Cosmodrome, Kazakhstan

A Russian Soyuz rocket will launch 34 satellites into orbit for OneWeb, which is developing a constellation of hundreds of satellites in low Earth orbit for low-latency broadband communications. The Soyuz-2.1b rocket will use a Fregat upper stage. [May 13]


Atlas 5 • STP-3

Launch time: TBD

Launch site: SLC-41, Cape Canaveral Space Force Station, Florida

A United Launch Alliance Atlas 5 rocket will launch the STP-3 mission for the U.S. Space Force. The STP-3 rideshare mission will launch the STPSat 6 satellite and several small satellites. STPSat 6 hosts several payloads and experiments, including the National Nuclear Security Administration’s Space and Atmospheric Burst Reporting System-3 (SABRS-3) payload, and NASA’s Laser Communications Relay Demonstration (LCRD) experiment. The rocket will fly in the 551 vehicle configuration with a five-meter fairing, five solid rocket boosters, and a single-engine Centaur upper stage. Delayed from Feb. 26 and June 23. [June 10]

Recent Astronomical Discoveries 

Icequakes Likely Rumble Along Geyser-spitting Fractures in Saturn’s Icy Moon

Saturn’s Moon Enceladus

Visible satellite passages over the next couple of days. 

All times are “local” (Dallas) time.


July 12

July 13

July 15

July 16


July 14

July 16

Hubble Space Telescope

July 10

July 12

July 13

July 14