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 responsibility for their own futures through the decisions they made. 随着...
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
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...
[source:The New Atlantis]. Many experts fear that building and deploying large satellites is simply not sustainable, at least not by taxpayer-funded government agencies. One solution is to turn over satellite programs to private interests, such as SpaceX, Virgin Galactic or other space companies,...
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 ...
"I had an erection so intense it was painful," Mullane said in his book Riding Rockets. "I could have drilled through kryptonite." NASA, on the other hand, would rather not talk about sex. That has been its modus operandi for the past 60 years of sending humans into space. No one...