根据标题 "a billionaire" 和第六段 "My oldest child, Elon, is making electric cars to save the environment and launching rockets." 可知A正确。4.推理判断题。根据第四段第一句 As they got older, they continued to take responsib
A typical space rocket: Ariane 5How many space rockets can you name? The mighty Saturn V that took astronauts to the Moon is probably top of your list. Or what about the super-versatile Atlas rockets? The first one took off on June 11, 1957 and the latest version, Atlas 5, is still...
Rob LudacerJessica Orwig
as well as their budgets, have tended to get bigger. The United States, for example, has spent $200 billion on its military satellite program since its inception and now, despite the investment, has a fleet of aging devices without many replacements waiting in the wings [source:The New Atla...
The SRBs are solid rockets that provide most of the main force or thrust (71 percent) needed to lift the space shuttle off the launch pad. In addition, the SRBs support the entire weight of the space shuttle orbiter and fuel tank on the launch pad. Each SRB has the following parts: so...
Over the summer, the district connected with SpaceX, which offered to run a pilot test of Starlink in Ector County next year, starting with 45 families and later expanding to 135 households. "It's just a moral imperative that we find solutions," says Adkins, "because we have so many kid...
How does SpaceX get such clear and detailed imagery and footage of its rocket launches? Here’s a 5-minute video fromPrimal Spacethat answers that question. With a rocket moving at over 3,000mph (5,000km/h) at a distance of perhaps 37 miles (60km) away from the camera, it can be...
How many newtons does a C rocket engine have? Because you are a fan of science and science fiction, you always follow what's going on with the space program, and now you have landed an internship with SpaceX, the private company that has been developing reusable rockets. Your task today...
Today, many people have heard of SpaceX. Few know what SpaceX does. And even fewer know what SpaceX really does. Here’s what SpaceX does: It takes things to space for people, for money. And as we established, here’s what SpaceX really does: It’s an innovation machine, trying ...
This time, SpaceX engineers will be hoping that they have done enough to ensure that the spacecraft reaches orbit for the very first time. The Starship flight system could one day be used for crewed flights to the moon, Mars, and other celestial bodies in deep space. But first, SpaceX ...