Electromagnetic spectrum
Range of frequencies or wavelengths of electromagnetic radiation
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| 2024 |
Terahertz radiation
German researchers published an experiment using a Tunable Diode Laser Absorption Spectroscopy (TDLAS) at 4.75 THz with an uncooled pyroelectric receiver. The THz source was a continuous-wave Distributed Feedback Quantum Cascade Laser (DFB-QC-Laser) operated at 43.3 K with laser currents between 480 mA and 600 mA, representing a significant advancement in terahertz radiation technology.
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| 2024 |
Earth–Moon–Earth communication
German musician Hainbach experimented with moonbounce and created an audio plug-in to reproduce the effect.
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| April 18 2024 |
European medium wave transmitters
Lithuania's Radio Signal began broadcasting at Sitkūnai transmitter on frequency 666 kHz
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| December 2023 | New Horizons had discovered approximately 100 Kuiper Belt Objects and closely examined about 20 of them, capturing details about their shape, rotational period, potential moons, and surface composition. |
| September 2023 | NASA announced that beginning in fiscal year 2025, New Horizons will focus on specific heliophysics data, while remaining available for a potential Kuiper belt flyby until 2028. |
| August 2023 | William L. Ballhaus was appointed as the president and CEO of Mercury Systems. |
| October 13 2022 |
European medium wave transmitters
Russian Federation's Radio Rossii began test broadcasting from Kaliningrad Radiocenter at 1143 kHz
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| June 30 2022 | Mercury Systems reported annual revenues of approximately US$988 million for its fiscal year, highlighting the company's financial performance in the aerospace and defense technology sector. |
| June 10 2022 | JPL released a report documenting record high temperatures in Las Vegas, NV, where air temperature reached 43°C (109°F). Ground temperature measurements showed significant variations: asphalt surfaces at 50°C (122°F), suburban neighborhood surfaces at 42°C (108°F), and green spaces at 37°C (99°F). |
| March 2022 |
European medium wave transmitters
Czech Republic's Radio Dechovka switched on transmitters at Libeznice and Davle frequencies (1260 kHz)
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| 2021 | Mission extension period ends, concluding the planned extended observations of Kuiper Belt objects. |
| December 31 2021 |
European medium wave transmitters
Cessation of medium wave broadcasts by Czech Radio stations ČRo Dvojka at several transmitter sites, including Dobrochov, Karlovy Vary, and České Budějovice
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| November 2021 | Acquired Avalex Technologies Corporation and Atlanta Micro, Inc. |
| May 2021 | Mercury Systems acquired Pentek for $65.0 million. |
| April 17 2021 | New Horizons reached a distance of 50 astronomical units (AU) from the Sun while remaining fully operational. |
| December 2020 | Acquired Physical Optics Corporation (POC) for $310 million. |
| November 8 2020 |
Terahertz radiation
Australian amateur radio stations VK3CV and VK3LN achieved a communication distance at 30 THz.
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| May 2020 | New Horizons observed the dwarf planet Haumea from a distance of 63 AU, continuing its extended mission of studying Kuiper Belt objects. |
| April 2020 | New Horizons was used with Earth telescopes to take pictures of nearby stars Proxima Centauri and Wolf 359, producing the first demonstrable stellar parallax from over 6.4 billion km apart. |
| 2019 |
Space weather
The 116th Congress began considering the passage of the Space Weather Coordination Act (S141, 115th Congress).
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| 2019 |
Space weather
International Civil Aviation Organization (ICAO) implemented a Space Weather Advisory program, designating four global space weather service providers.
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| January 2019 | Acquired GECO Avionics, LLC for US$36.5 million. |
| January 9 2019 | New Horizons returned to a spin-stabilized mode to prepare for sending the remaining data back to Earth, with a full data download expected to take approximately 20 months. |
| January 2 2019 | Continued transmission of high-priority data from the Arrokoth encounter to Earth. |
| January 1 2019 | New Horizons completed its flyby of Kuiper belt object 486958 Arrokoth (previously nicknamed Ultima Thule). |
| December 24 2018 | Completion of the official approach phase to Arrokoth. |
| August 2018 | NASA used results from New Horizons' Alice instrument to confirm the existence of a 'hydrogen wall' at the outer edges of the Solar System. |
| August 16 2018 | Official approach phase to Arrokoth began. New Horizons made its first detection of Arrokoth from a distance, observing it at magnitude 20 against a stellar background in the constellation Sagittarius. |
| August 13 2018 | Spacecraft transitioned from spin-stabilized mode to three-axis-stabilized mode in preparation for the Arrokoth encounter. |
| July 3 2018 | The SpaceX Dragon arrived at the International Space Station and delivered the ECOSTRESS radiometer, which was subsequently mounted on the station's Kibo module. |
| June 29 2018 | SpaceX Dragon launched from Cape Canaveral, Florida, carrying the ECOSTRESS radiometer to the International Space Station. |
| June 5 2018 | New Horizons spacecraft was awakened from hibernation at approximately 00:33 UTC to prepare for the Arrokoth encounter approach phase. |
| April 17 2018 |
Karl Rawer
Passed away, just two days before his 105th birthday.
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| 2017 |
Space weather
HR3086 Bill was developed, incorporating material from parallel agency studies as part of the OSTP-sponsored Space Weather Action Program (SWAP).
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| December 5 2017 | New Horizons took a calibration image of the Wishing Well cluster from 40.9 AU away, breaking the record for the most distant image ever taken by a spacecraft. The spacecraft then imaged two Kuiper belt objects from close distances of 0.50 and 0.34 AU. |
| July 2017 | Acquired Richland Technologies, LLC (RTL), increasing market penetration in commercial aerospace, defense platform management, C4I, and mission computing. |
| April 2017 |
Karl Rawer
Celebrated his 104th birthday.
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| April 2017 | Mercury Systems acquired Delta Microwave, LLC for US$40.5 million, enabling expansion into satellite communications, datalinks, and space launch markets. |
| 2016 |
Space weather
The Space Weather Research and Forecasting Act (S. 2817) was introduced to build upon the previous economic innovation zone concepts.
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| November 2016 | Acquired Creative Electronic Systems for US$38 million. |
| October 25 2016 | Last recorded data from the Pluto flyby was received from New Horizons at 21:48 UTC. |
| July 2016 | LORRI camera captured distant images of Quaoar to study its light-scattering properties. |
| July 1 2016 | The New Horizons mission received funding extension through 2021 for further exploration of Kuiper Belt Objects (KBOs), enabling the Kuiper Belt Extended Mission (KEM). |
| April 7 2016 | New Horizons re-imaged KBO 15810 Arawn with the LORRI instrument, refining its location and determining its rotational period of 5.47 hours. |
| March 30 2016 | New Horizons reached the halfway point of transmitting the Pluto flyby data, approximately nine months after the initial flyby. |
| 2015 |
Space weather
U.S. Congress bill HR1561 was introduced, providing groundwork for exploring social and environmental impacts of a Space Weather Economic Innovation Zone.
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| 2015 |
Space weather
The concept of a Space Weather Economic Innovation Zone was first suggested by ACSWA, proposing to incentivize commercial space weather development and encourage expanded economic activity in managing space weather risks.
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| December 2015 | Acquired Lewis Innovative Technologies, Inc. (LIT). |
| December 31 2015 |
European medium wave transmitters
Closure of Radio Luxembourg transmitter in Marnach, Luxembourg, ending its long-running international broadcasting
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| November 4 2015 | Completed the final engine firing to adjust the spacecraft's trajectory for the upcoming Kuiper Belt Object flyby. |
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This contents of the box above is based on material from the Wikipedia articles Earth–Moon–Earth communication, Terahertz radiation, List of European medium wave transmitters, New Horizons, ECOSTRESS, Mercury Systems, Space weather & Karl Rawer, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.