News Brief: Last week we learned that SpaceX is looking to raise more than $500 million in a new Series I investment round, giving Elon Musk’s space company an estimated valuation of $23.7 billion. Today, SpaceX says it’s brought in $214 million so far, less than two weeks after the round opened. That leaves $286 million yet to be sold. Documents filed with the Securities and Exchange Commission show that 15 unnamed investors have bought in, which works out to an average of $14.3 million per investor. Today’s successful launch of NASA’s planet-hunting TESS probe serves as one more reason why SpaceX’s (privately held) stock is on the rise.