highpointscientific.com Rank 129.7K. Estimated value 16,860$nasaspaceflight.com Rank 129.9K. Estimated value 16,848$astromia.com Rank 469.8K. Estimated value 4,608$darksky.org Rank 402.8K. Estimated value 5,376$spacetelescope.org Rank 447.3K. Estimated value 4,836$astronomia.com Rank 8.6M. Estimated value 240$moongiant.com Rank 95.4K. Estimated value 22,992$cite-espace.com Rank 2.8M. Estimated value 756$aasnova.org Rank 1M. Estimated value 2,172$stsci.edu Rank 331.7K. Estimated value 6,540$