HELSINKI — The Queqiao-2 satellite tv for pc has accomplished perform and efficiency assessments in lunar orbit, clearing China to launch its upcoming lunar far aspect pattern return mission.
Queqiao-2 accomplished on-orbit communication testing in latest days, the China Nationwide House Administration (CNSA) introduced April 12.
The spacecraft carried out profitable communication assessments with Chang’e-4 mission spacecraft on the far aspect of the moon April 6. This was adopted by a take a look at April 8-9 Beijing time with the Chang’e-6 spacecraft again on Earth, which is but to launch.
Confirming the operation and efficiency of Queqiao-2 is the ultimate step earlier than China launches its advanced Chang’e-6 mission. The deliberate 53-day is a extra bold follow-up to the 2020 Chang’e-5 pattern return mission which collected 1,731 grams of lunar materials from the moon’s close to aspect.
Chang’e-6 now seems set to launch Could 3 in accordance with airspace closure notices. The mission goals to gather as much as 2,000 grams of rock samples from Apollo crater on the lunar far aspect.
That hemisphere of the moon by no means faces the Earth on account of tidal locking. Queqiao-2 has thus been deployed to allow the pioneering mission by relaying indicators between floor stations and Chang’e-6 on the lunar far aspect.
If profitable, Chang’e-6 would ship lunar materials to Earth. Evaluation of these may present new insights into the historical past of the moon and the variations between its close to and much sides.
China launched the Queqiao-2 lunar communications relay satellite tv for pc March 19 on a Lengthy March 8 rocket. The spacecraft entered lunar orbit March 24 and realized its supposed elliptical, 24-hour-period orbit April 2.
Additionally aboard the Queqiao-2 launch have been a pair of smaller spacecraft named Tiandu-1 and Tiandu-2. The CNSA assertion confirmed the pair separated from one another in lunar orbit April 3.
The duo at the moment are conducting a collection of communication expertise verification assessments. The experimental satellites will fly in formation in lunar orbit and conduct assessments for navigation and communications expertise verification.
The pair are pathfinders for the deliberate wider Queqiao constellation to offer lunar navigation and communication companies. Tiandu-2 additionally returned an infrared picture of the moon and distant Earth taken April 8.
Queqiao-2: A bridge to the far aspect and past
Queqiao-2, or “Magpie Bridge-2”, is a extra succesful follow-up to Queqiao, launched in 2018. The sooner satellite tv for pc facilitated the Chang’e-4 mission. That mission, consisting of a lander and rover, made the first-ever lunar far aspect touchdown in 2019.
The brand new, 1,200-kilogram satellite tv for pc carries a 4.2-meter parabolic antenna and is a part of China’s plans for future lunar exploration and a stepping stone in the direction of constructing a lunar base within the 2030s.
Queqiao-2 will shift its orbit right into a 12-hour interval to assist the 2026 Chang’e-7 and later Chang’e-8 missions. These missions will goal the lunar south pole to detect volatiles and potential sources on the moon.
Queqiao-2 will enhance communications between Earth and spacecraft on the lunar south pole, whereas additionally conducting related science with its personal payloads.
Chang’e-8 will take a look at in-situ useful resource utilization strategies, reminiscent of utilizing lunar regolith to provide bricks. Collectively, the missions are precursors to the China-led Worldwide Lunar Analysis Station (ILRS).
Thailand just lately grew to become the ninth nation to hitch the ILRS. Latest studies point out that Turkey has additionally utilized to hitch the initiative, first formally unveiled by China and Russia in 2021.
