The Company performed an annual qualitative goodwill assessment of the goodwill held related to the BlackSky reporting unit as of December 31, 2020. The Company determined that no triggering events

 

 

For each of the three months ended September 30, 2021 and 2020, amortization expense related to intangible assets was $0.3 million. For each of the nine months ended September 30, 2021 and 2020, amortization expense related to intangible assets was $1.0 million. These amounts were included in depreciation and amortization expense in the unaudited condensed consolidated statements of operations and comprehensive loss.

Changes in the carrying amount of goodwill are as follows:

 

In the years ended December 31, 2020 and 2019, the Company performed its annual goodwill impairment test and determined that the fair value of the reporting unit to which goodwill was allocated was in excess of its respective carrying value and, therefore, no goodwill impairment was identified.

Intangible assets consisted of the following:

 

During the years ended December 31, 2020 and 2019, there was no indication of impairment of the Company’s intangible assets.

For the years ended December 31, 2020 and 2019, amortization expense related to intangible assets was $1.35 million and $1.35 million, respectively, which is included in depreciation and amortization expense in the consolidated statements of operations and comprehensive loss. The Company estimates that it will have the following amortization expense for the periods indicated below:​​​​​​​