By Dan Robitzski
The Nancy Grace Roman Space Telescope, NASA’s latest flagship astronomy research mission, made it to space.
A Falcon Heavy launched the observatory Aug. 30, beginning its months-long, 1.5 million kilometer journey to the Earth-sun L-2 Lagrange point. Once there, following a course-correction burn or two and instrument deployment, it will begin to collect massive surveys of the sky over the course of a five-year prime mission. Part of this research mission is to scan for exoplanets throughout the galaxy — a particular interest of Roman’s namesake, former NASA astronomy chief Nancy Grace Roman — that are too dimly lit for older observatories to see.
Astronomers also expect roman to help answer fundamental questions about the universe — Roman and its surveys offer a technological leap meant to provide new insight into dark energy and matter.
“We’re about to discover what the universe is made of,” said Lucas Paganini, Roman telescope program executive at NASA Headquarters.
Roman’s surveys, beyond addressing cosmological studies, will provide a wealth of data for astronomers. That includes observations of 20 billion stars in the Milky Way and 2 billion galaxies. Astronomers expect to detect 100,000 exoplanets, about 40 times the number currently known. “Think of this as the largest census we’ve ever done of other planets in our galaxy,” Julie McEnery, Roman telescope senior project scientist, said at an Aug. 29 briefing.
So, hopefully, lots of exciting news and discoveries to come over the coming years. But it was a difficult road to get there. NASA often heralded Roman as proof that it could deliver major milestones early and under budget. However, the mission faced frequent budget challenges.
The White House’s budget proposals for NASA in fiscal years 2019, 2020 and 2021 all proposed canceling the mission, then called WFIRST. The administration’s fiscal year 2026 budget request for NASA also proposed a significant cut for Roman. Congress appropriated full funding for the mission in all four cases.
President Donald Trump called into NASA’s Aug. 30 mission briefing to congratulate the agency, adding that the launch “looked beautiful on television” and asked if there was “anything negative” he needed to know about.
|
No comments:
Post a Comment