David S. F. Portree - Profile and Journalist Details
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David S. F. Portree
Verified
Blogger, Spaceflight History and Science Writer, Freelance
Flagstaff
Beats
energyscience health nanotechnology policy
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Content
By David S. F. Portree| Arizona State University News@ The Orientale Basin, about 950 kilometers wide, is the striking multi-ringed impact feature at lower right. New research suggests that the impact event that formed Orientale may have emplaced light plains deposits - visible here in green - over a large portion of the lunar surface.
By David S. F. Portree| Arizona State University News@ In 1969, NASA published a map showing candidate Apollo 11 and Apollo 12 landing sites. The map was based on photographs taken using large Earth-based telescopes. The map above, based on an LROC global image mosaic, is a near-copy of that historic map. Red dots represent the five candidate Apollo 11 and Apollo 12 landing sites as of February 1968. Yellow circles represent the final three Apollo 11 target sites.
By David S. F. Portree| Arizona State University News@ The Orientale Basin, about 950 kilometers wide, is the striking multi-ringed impact feature at lower right. New research suggests that the impact event that formed Orientale may have emplaced light plains deposits - visible here in green - over a large portion of the lunar surface.
Company Info
Freelance
Freelancer.com is the largest freelancing and crowdsourcing marketplace in the world, connecting over 81 million employers and freelancers across more than 247 countries. Founded in 2009 and based in Sydney, Australia, the platform allows employers to post jobs while freelancers can bid on these projects. It is publicly traded on the Australian Securities Exchange under the ticker ASX:FLN. The platform supports a variety of work categories, including software development, writing, design, and marketing. Freelancer.com also offers contests for creative work, where employers can award prize money to winning entries. Users can choose from different membership plans, including free and paid subscriptions, which provide various benefits. The mobile app enhances project management and communication for users on the go. With a diverse customer base that includes individuals, small businesses, and large enterprises, Freelancer.com plays a significant role in the global online economy.
De Pere, Wisconsin, United States