Lee Duna@lemmy.nz to Astronomy@mander.xyzEnglish · 2 天前Confirmed at Last: Barnard's Star Hosts Four Tiny Planetsaasnova.orgexternal-linkmessage-square17fedilinkarrow-up198arrow-down10
arrow-up198arrow-down1external-linkConfirmed at Last: Barnard's Star Hosts Four Tiny Planetsaasnova.orgLee Duna@lemmy.nz to Astronomy@mander.xyzEnglish · 2 天前message-square17fedilink
minus-squarePennomi@lemmy.worldlinkfedilinkEnglisharrow-up7·2 天前 These planets are in remarkably close quarters, with periods of just 2.34, 3.15, 4.12, and 6.74 days. Speedy little guys
minus-squarevery_well_lost@lemmy.worldlinkfedilinkEnglisharrow-up8·2 天前The furthest of the four is estimated to have an orbital radius of about 0.03 AU. That’s 1/10th the size of Mercury’s orbit around the sun!
minus-squarekeepthepace@slrpnk.netlinkfedilinkarrow-up1·2 天前850°C apparent temperature 830°C. Stay hydrated.
minus-squarekeepthepace@slrpnk.netlinkfedilinkarrow-up3·2 天前“Hot planets are waiting for you in the star’s neighborhood!”
Speedy little guys
The furthest of the four is estimated to have an orbital radius of about 0.03 AU. That’s 1/10th the size of Mercury’s orbit around the sun!
That’s a fuel scooping range.
Warning, temperature critical.
At least it’s a dry heat.
850°C apparent temperature 830°C. Stay hydrated.
“Hot planets are waiting for you in the star’s neighborhood!”