that it did not have sufficient friction to dig deeper. One suggested solution was to partially fill the hole with soil to increase friction. In early 2021, the InSight team announced they would attempt to detect the arrival of the Mars 2020 mission using InSight's seismometers. Pre-landing modeling of the signals from Mars 2020's entry, descent and landing sequence suggested that the most probable source of any potential signal would be the impact of the spacecraft's cruise mass balance devices with the Martian surface, at speeds of around 4000 m/s. Shortly after successfully landing the Perseverance Rover, NASA announced that its landing went undetected by InSight. This helped demonstrate that Mars has a seismic efficiency of less than 3%. By August 2020, the operations team had made some progress using the scoop to assist the mole in digging deeper into its hole, by pressing against the back. The scoop was used to fill the hole of the partially submerged mole, burying it fully for the first time. The team hoped the mole can now dig further into the surface on its own, possibly with the additional assistance of the scoop. On 14 January 2021, the heat probe part of the mission was declared to be over, after the science team had determined that the soil properties at the landing location were incompatible with what the instrument had been designed for. The team attempted many different remedies over nearly two years to get the mole to burrow into the soil, but in the end, the attempts did not succeed. The friction between the soil and the probe was not enough for the mole to hammer itself down through the soil. Another set of attempts to get the probe deeper took place on 9 January 2021. After they proved unsuccessful, the decision was made to leave the probe as is and end attempts to dig deeper. The mole did, with all the assisting measures, burrow itself completely underground. The top of the mole is 2 to 3 centimetres below the Martian surface. To be able to produce the intended scientific measurements, the mole needed to have dug itself at least 3 metres deep. Thus the mole was unsuccessful at producing its intended scientific results. However the mole's operations did produce useful and interesting results about the soil at the InSight site; about conducting excavation, or drilling, on Mars; and about operating the