Luna 1, also known as Mechta (meaning “Dream” in Russian), was launched on January 2, 1959 from the Baikonur Cosmodrome. Luna 1, the first of a series of Soviet automatic interplanetary stations successfully launched in the direction of the Moon, was the first spacecraft to reach the vicinity of the Earth’s Moon.
It was also the first spacecraft to be placed in heliocentric orbit (a heliocentric orbit, sometimes called circumsolar orbit, is an orbit around the barycentre of the Solar System, which is usually located within or very near the surface of the Sun). The space probe, which contained radio equipment including a tracking transmitter and telemetry system, and five instruments to study the Moon and interplanetary space, is sometimes referred to as the “First Cosmic Rocket”, in reference to its achievement of escape velocity.
Intended as an impactor (when a high velocity impact is planned not for just achieving the surface but for study of consequences of impact, the spacecraft is called an impactor), Luna 1, which marked the first instance of radio communication at the half-million-kilometre distance, was launched as part of the Soviet Luna program in 1959. Due to an incorrectly timed upper stage burn during its launch, it missed the Moon: it thus became the first spacecraft to leave geocentric orbit. This mission was eventually accomplished by Luna 2.
While travelling through the outer Van Allen radiation belt, the spacecraft’s scintillator made observations indicating that a small number of high-energy particles exist in the outer belt. The measurements obtained during this mission provided new data on the Earth’s radiation belt and outer space. The Moon was found to have no detectable magnetic field. The first-ever direct observations and measurements of the solar wind, a strong flow of ionised plasma emanating from the Sun and streaming through interplanetary space, were performed.
Luna 1 was part of the Luna program a series of robotic spacecraft missions sent to the Moon by the Soviet Union between 1959 and 1976. Fifteen were successful, each designed as either an orbiter or lander, and accomplished many firsts in space exploration. They also performed many experiments, studying the Moon’s chemical composition, gravity, temperature, and radiation. Twenty-four spacecraft were formally given the Luna designation, although more were launched. Those that failed to reach orbit were not publicly acknowledged at the time, and not assigned a Luna number.
As we read on NASA’s website, “The primary objectives of the mission were to measure temperature and pressure inside the vehicle; study the gas components of interplanetary matter and corpuscular radiation of the Sun; measure the magnetic fields of the Earth and moon; study meteoric particles in space; study the distribution of heavy nuclei in primary cosmic radiation; and study other properties of cosmic rays”.
Luna 1’s legal status
What are space probes? They are space object. The term Object in reference to outer space was first used in 1961 in General Assembly Resolution 1721 (XVI) titled International cooperation in the peaceful uses of outer space to describe any object launched by States into outer space. Professor Bin Cheng, a world authority on International Air and Space Law, has noted that members of the COPUOS during negotiations over the space treaties treated spacecraft and space vehicles as synonymous terms. The Space Object can be considered as the conventional launcher, the reusable launcher, the satellite, the orbital station, the probe, the impactor, the space telescope…
The term “space object” is not precisely defined by the Onusian space treaties. Let’s note that the five outer space treaties use such phrases as “objects launched into outer space”, object placed “in orbit around the Earth”, “in orbit around or other trajectory to or around the Moon”, or “around other celestial bodies within the solar system, other than the Earth”. Some of the treaties refer also to “spacecraft”, or “landed or constructed on a celestial body”, “man-made space objects”, “space vehicle”, “supplies”, “equipment”, “installations”, “facilities” and “stations”.
Let’s remember that “A treaty shall be interpreted in good faith in accordance with the ordinary meaning to be given to the terms of the treaty in their context and in the light of its object and purpose”, article 31 of the Vienna Convention on the Law of Treaties of 1969. In addition, “Recourse may be had to supplementary means of interpretation, including the preparatory work of the treaty and the circumstances of its conclusion, in order to confirm the meaning resulting from the application of article 31, or to determine the meaning when the interpretation according to article 31: (a) leaves the meaning ambiguous or obscure; or (b) leads to a result which is manifestly absurd or unreasonable”, article 32 of the Vienna Convention on the Law of Treaties of 1969.
Let’s recall that a space object causing damage triggers international third-party liability under the Convention on International Liability for Damage Caused by Space Objects (entered into force in September 1972). Article I (d) of which enounces that “the term space object includes component parts of a space object as well as its launch vehicle and parts thereof”. Its Article II adds that “A launching State shall be absolutely liable to pay compensation for damage caused by its space object on the surface of the Earth or to aircraft in flight”.
A space object requires, thanks to the Convention on Registration of Objects Launched into Outer Space (entered into force in September 1976), registration. Article II of which states that “When a space object is launched into Earth orbit or beyond, the launching State shall register the space object by means of an entry in an appropriate registry which it shall maintain. Each launching State shall inform the Secretary-General of the United Nations of the establishment of such a registry”.
Finally, the term space object effectively triggers application of much of both the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies (entered into force in October 1967) and the Agreement on the Rescue of Astronauts, the Return of Astronauts and the Return of Objects Launched into Outer Space (entered into force in December 1968). Article VII of the first declares that “Each State Party to the Treaty that launches or procures the launching of an object into outer space, including the Moon and other celestial bodies, and each State Party from whose territory or facility an object is launched, is internationally liable for damage to another State Party to the Treaty or to its natural or juridical persons by such object or its component parts on the Earth, in air space or in outer space, including the Moon and other celestial bodies”.
Article 5 of the latter states that “1. Each Contracting Party which receives information or discovers that a space object or its component parts has returned to Earth in territory under its jurisdiction or on the high seas or in any other place not under the jurisdiction of any State, shall notify the launching authority and the Secretary-General of the United Nations. 2. Each Contracting Party having jurisdiction over the territory on which a space object or its component parts has been discovered shall, upon the request of the launching authority and with assistance from that authority if requested, take such steps as it finds practicable to recover the object or component parts. 3. Upon request of the launching authority, objects launched into outer space or their component parts found beyond the territorial limits of the launching authority shall be returned to or held at the disposal of representatives of the launching authority, which shall, upon request, furnish identifying data prior to their return”.
The Outer Space Treaty doesn’t really provide a definition for “object launched into outer space” other than an indication in Article VIII that it includes the “component parts” of the “object launched into outer space”. It states that “A State Party to the Treaty on whose registry an object launched into outer space is carried shall retain jurisdiction and control over such object, and over any personnel thereof, while in outer space or on a celestial body. Ownership of objects launched into outer space, including objects landed or constructed on a celestial body, and of their component parts, is not affected by their presence in outer space or on a celestial body or by their return to the Earth. Such objects or component parts found beyond the limits of the State Party to the Treaty on whose registry they are carried shall be returned to that State Party, which shall, upon request, furnish identifying data prior to their return”.
We can conclude by saying that Luna 1, the first spacecraft to reach the vicinity of the Moon, was a space object.